I totally agree with your last part. Although Tim Cahill, Damarai Gray, Daniel James, Lewis Cook, Michail Antonio, James Maddison, Aaron Cresswell, Aaron Ramsey, Joe Gomez, Jermaine Jenas, John Stones, Darren Bent amd Theo Walcott have or some will have solid Premier League careers. Over the years there have been other, not Just Bale and Walker.
I do get what you mean though going forward, buying less players for probably a greater transfer and a greater chance of working out a success.