the top teams do play youngsters though, if they are good enough they will play. And let's not be forgetful, think we've been up there in each of the past 3 or 4 seasons in terms of most minutes given to under 21 players (Davies, DCL, Kenny, Holgate, Galloway, etc all played significant minutes for us)
Spurs and Liverpool give big minutes to young players, chelsea (albeit due to restrictions) are going to give more prominent roles to likes of abraham, and maybe reece james. Ole has said 17 year old Greenwood will play a lot for united this season.
If we have chaps good enough coming through, they will force there way into the squad and be given opportunities.
Can see your point though. The top teams already are where they want to be so can give some opportunity to potential, wheras we want to get there, and get there fast. I don'tsee anyone in the under 23's that will make it big time with us