Very good footballers? A bit of a false narrative you're creating there. Let's look at the full picture. When Poch came in we had no heart, lazy shit strikers, and a leaky defence. Kane was a youngster with potential but that's about it, Alli was a league 1 player, Vertonghen was playing like he didn't wanna be here, Rose was a Sunderland level player, Winks was youngster few had heard of, Dier was an unknown, and that's not to mention the likes of Soldado, Ade, Kaboul, Capoue etc.
We had very few good footballers (Eriksen, Dembele, Lloris) and the atmosphere and culture was poisonous. Poch turned that heap of shit around completely and without spending big bucks. He developed youngsters like Kane, Alli, Winks etc, got rid of the deadwood and generally bought cheap players in order to try and improve the team (Toby, Dier etc).
He got us to verge of winning trophies and challenging for major titles and to take the last step, he needed the help of the board. Rightly or wrongly they declined and now we for the next 25 years we will be thinking "what if". We were on the cusp of something great, something that was unthinkable before Poch came in. These types of opportunities don't come regularly for a club like this.