There's definitely a clamour to change the rules, however it's the governing bodies who have set the rules and ultimately decide on whether games are postponed or not. They can and have refused postponement requests before now.

It will come to a head at some point though, as it's going to get to a point where teams will have be playing two midweek games to catch up. Burnley are 5/6 games behind others in the Premier League already.