The valuation of any business includes a certain amount of goodwill. For a football club that number is often especially high, though I do agree with you that £3.5b is way overvalued, by more than 2x IMO.
Is the 3.5bn valuation inclusive of the debt burden?
(Plus, where did that number come from?)
It's hard to guage their exit strategy. My suspicion is, simply, Levy likes his job. The realisation of his long term plan/vision is his daily motivation, so where does that end?. Full revenue streams financially securing us? NFL franchise?...all business goals. I don't think he considers certain trophy wins as a moment to think his work is done. He will supply the money and setup going forward to DofF, managers and ultimately new owners to facilitate that part of the story.
The problem we have is, as they realise each stage of their plan, the value goes up but the potential to add more value (for new owners) gets skinnier. Hence the pool of potential new owners shrinks.
Valuing a football club is difficult, especially in our case. Without knowing what's included for starters (How much is 'part' of THFC?). Our brand value compared to our peers, the sheer annual uncertainty of a big revenue stream (CL), especially compared to other European leagues.
If we continue out of the CL for 2-3 more years I can't see us being worth more the 1bn if the new owners take on our debt as well.
Although by then we'll have a pretty good idea how much the '365 stadium' can contribute to the bottom line. It may blow all historical stadium revenues out of the water, so help support ENIC valuations (but hopefully support the team as well, at bare minimum providing a safety net to keep us always in a 'top 6' position).
I think all the time Levy is motivated and driven it really is his baby. I'm not sure when he'll think his work is done? An extraordinary offer would always be one way to shift him (hence his toppy valuation)
As for Lewis, I honestly don't think he cares, he's 84 now, had a shed load of money for a long time now, if I'm shooting the breeze down in the Bahamas everyday, and I have a man like Levy running one of my businesses over in London, Im not realty giving it much thought tbh.