Don't forget that markets like predictability. A "kick the can down the road" solution offers none. I wouldn't mind if forking bitcoin was fairly easy but as far as I know, it is not.
The smaller the change, the higher the predictability. A drastic change in any aspects of the bitcoin protocol will cause many unpredictable behavior from various participants and the future becomes very risky
This is not true for those who rely on the network to handle a lot of capacity. Having uncertainties on the capacity of the network is not good for predicting where your business is going.