Money, wages, and club structures.
Financial implications of getting it wrong means relegation after investment.
Getting right just means 1 successful season then you sell the players and recycle.
As mentioned, the only one close is Brighton but they spent £100mill net on promotion and their highest place was 15th for 4 seasons. It's only these last 2 where a long term play has started to be successful. But investment was made to stay in the league.
Good job our strategy of signing bad, old, expensive, premier league proven players has kept us well clear of this outcome.
The simple fact is that this club has followed your proposed strategy and has got worse every year. If we get worse again this year we will be relegated. The option you advocate for striker, Che Adams, is just this year's Maupay. He's a bad player. I know you say he's the "right bad player", whatever that means, but more bad players send us down. We are not a good side and, despite that, Che Adams does not make us better. It's a stupid idea.