There is no long-term in football anymore. Vast majority of coaching set ups last no longer than a few seasons. People like to talk about "projects" but at a really well-run club this is actually about a footballing blue-print set by a director of football/sporting director that manages the recruitment of both players and coaching staff to best match the club's philosophy.
Thing with Mourinho is he is as you say a counter attacking manager but he was largely handed a squad built by Poch to be a high pressing attacking squad. The investment in hindsight wasn't matched to what that particular head coach needed. Bale clearly wasn't who Mourinho wanted. He tried to make a system work with the squad he had but it didn't work and he never stays longer than 2 or 3 seasons at a club.
Conte was similar only he wanted wing backs and a 3-4-3 so again we are in the middle of shifting our entire philosophy, buying Porro for example then we get rid of him and hire someone who plays in a completely different way once again.
So there's clearly poor decision making at the top but I also think Ange is not filling me with confidence as someone that will still be here in another season.
Brighton are an example of how you should do things though. They've had a few different head coaches over the last few years yet the style of play and recruitment has remained consistent and they're consistently hovering around the top 8 with a fraction of the resources of many PL clubs.
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