The German champions-elect have sealed their 23rd title with six games to spare and are now just one win away from matching the record number of points for a season, set by Borussia Dortmund last year.
Those two clubs seem set to dominate German football for years to come, but Hoeness hopes a duopoly such as the one in Spain with Barcelona and Real Madrid does not become reality in the Bundesliga.
"There has been a huge dip in the competitiveness of the league and we can't be happy with that," he told Kicker magazine. "We've got to analyse why that is the case."
Bayern's recent 9-1 hammering of Hamburg and a goal difference of plus 70 after 29 games is proof of the gulf which has opened up at the top.
Second-placed Dortmund, who put six past Greuther Furth on Saturday, have scored 72 goals this season, almost 20 more than anybody below them, and the two Champions League semi-finalists appear to be in a league of their own this year.
Hoeness hopes his side will be put to a more serious test next season.
"We see the need for action," he said. "It is not on that we see such results."