Winning a trophy serves a few purposes:
1. It makes fans proud of the club
2. It lifts the club's reputation, allowing them to attract better players
3. Increase in club revenues (prize money, commercial exposure)
4. Success leads to success - a happy in form team improves
The THFC board have reached a balance. Being able to produce elite world class players (Bale, Kane, Dele, Eriksen, Son, Modric, Lloris), and brining in world class coaches (Mourinho, Conte) has certainly hit the spot on each of the above points and papered over the cracks.
However, the fans and players have grown tired without success on the pitch. (1,4) have fallen away. (2, 3) will drop off without Champs League. And without a top coach and Lloris / Kane likely leaving in the summer we are spiralling downwards.
The club has invested heavily in players. 600m spent on the squad in 4 years. Yet where do we turn for success on the pitch? - Son, Kane, Lloris and Dier. An utterly disastrous 5 years of management and spending - where the board chose to throw money and try to buy success - brining in coaches and players whom feel Spurs is below them and don't want to be here.
The solution isn't to continue throwing money at the problem. It is to get back to basics, coach the players we have and get some identity and personality back in the dressing room.