I totally agree the club is bigger than Bale. My point being that in losing players like Bale, especially in the eyes of the 99.9% of the worlds football consuming population looking from the outside in who are not Tottenham fans like us looking from the inside out, we unfortunately also lose the ability to be something bigger, more special to them. In todays world, that is crucial.
It has been identified time and time again, none better than at Tottenham itself. "The game is about glory", "Better to fail aiming high, than to succeed aiming low". That is infinitely more true now than ever. Look at what the world watches on YouTube. It's not Micheal Carricks excellent positioning and distribution. Its the things that raise the hairs on the back of your neck. Madrid correctly pinpointed the essence of what footballing glory and excitement is in todays quick consumption, reflected glory world and acted spectacularly upon it with the Galicticos plan. They have scraped one Champions League, (partially) with this plan at the very outset, and not really very much since. In fact, from a certain point of view it has not worked on the pitch, and even looks a little gaudy to "proper" football supporters. But despite this, despite Barca being better for a long time now, Real are still regarded as the most glamorous, glorious club in world football, and post turnover figures commensurate with this.
Only the unusual and relatively sudden success of La Masia and the extraordinary luck of having arguably the greatest player ever blossom for them keeps Barca a nose ahead on the pitch, and remotely in touch for the affections of the masses.
Indeed, the fine lines, the fragility... luck even, of the crossroads in how great things become so can be illustrated by the Premiership itself. The propensity of the English language across the world allowed the Premiership and Sky to burst forth and claim the riches of emerging Asian markets. It is arguably the defining reason for propelling itself so far ahead of other great footballing nations in terms of the share of the spoils. If Germany is able to continue offering a superior product, that playing field could change again sometime.
My point about Porto or Benfica was not regarding their potential for growth. It was to highlight the way people feel in general looking in at them after they move on the players that once attracted the gaze and excitement of the masses. They are a good example, because the model they employ (a good and necessary model, due to the constraints of their environment) gives us the chance to make a direct comparison of what happens to a club in this situation in a condensed timescale, of a season or two. They remain very good clubs and teams, often competing near the top level. But it is at the expense of ultimate glory. They, in effect, are the anti-Galacticos. It keeps them solvent, even quite near the top, but there is something deep within that which turns the majority of the casual football consuming population off. This they must begrudgingly accept that as their reality if they are to stay true to their model, and stay alive. Porto, Benfica, Ajax, Celtic. By living this existence, they will never be able to know if they can match and surpass Madrid and Barca, as they often did before the playing field of world football became altered.
The lesson in there for Tottenham is that, whilst it is patently clear we are not in the Portuguese (or Dutch, or Scottish) league, we are still similarly hamstrung, like them, by our current position below the very top table, and only something spectacular will capture the imagination to drag us up. Tottenham is less of a legendary club than Benfica, Celtic and Ajax so in adopting facets of their admittedly successful and very necessary model, how can we ever hope for a true breakthrough? They have proven conclusively that it is a model more geared for survival than crossing the event horizon, which is where Tottenham currently find themselves.
Of course, your scenario is entirely possible, also. A less spectacular team, more efficient, may have a spectacular tilt at the title. In Lamela, there could indeed be a player that stands the best chance of capturing the imagination of people as Bale does. That can happen, I don't doubt that. United lost Beckham. Ronaldo was a superstar for United later on. Things change, new heroes emerge. The thing is, no matter how good a deal it was for United, how many new heroes emerged it is the enduring image in the worlds collective mind of Real Madrid being the apex predator over United that feeds into the notion of Madrid being the greater club. The ultimate, and entirely intended, successful outworking of the Galactico policy, regardless of the trophy room.
It's a little of the chicken and the egg. If United forced Ronaldo to stay, won the Champions league, relegated and eroded Madrids myth in subsequent years, would he (or the next Ronaldo) see Madrid as preferable to United. Possibly not.
All I'm pointing out is that once -in-a-blue-moon players like Bale are really the only ones that can drastically change the fortunes, mythical or otherwise, for clubs. At this moment we have one of the only weapons that brings greater glory to sports teams: a megastar.
Granted, we have other assets. A fantastic infrastructure and team to make a good fist of it if we trade our only cow for some magic beans. But if they don't happen to grow,well, we are just the people who have lots of beans, and clubs like Madrid remain gorging on all the steak!