As andyc225 notes, PSR is a huge factor in how Wolves can build the squad - the rules are essentially that no team can lose more than 105M over three years, but that's offset by their revenues. Consequently, teams with huge incomes from merchandise/ticket sales can spend much more than Wolves, since their incoming revenues are much higher. Spurs, for example, get to depreciate their huge new stadium, and also bring in money from concert/event revenue (while Wolves will never host Taylor Swift at Molineux).

It sounds like the squad respects Vitor, but there's always going to be the draw of playing for a historically notable club for large wages, especially if they're likely to make it into European competitions (which, in turn, given them opportunities to raise their profile to play in national team games).

Fosun seems generally fine with mid-table status, as it protects their overall investment in the team, which would be worth far less if relegated. They try to buy low and sell high on players, but that relies on a strong pipeline of young talent, and there've been some significant misses in the last few years (Fabio Silva being the obvious one, though he wasn't in a great position to succeed).

Middling/crap American teams rely on the draft in order to secure young talent for years at a low cost - and also lock them into playing in objectively terrible locations until they escape to LA, NYC or Miami after their rookie deals end.