The European football chief wants to force clubs to use more homegrown players. Eight are currently required in 25-man Champions League squads.
In the July issue of "World Soccer" magazine, Platini says "what is important in the future is to limit the possibility to have the best players in one team or in two teams ... or competition itself is finished."
Platini also highlighted "big clubs with a lot of money who can have everybody. We have to think about football in all of Europe not only in two or three clubs."
In the interview, Platini did not address if he will run for FIFA president.
Oscars 2019: Full list of winners