Segwit is just a first aid to this problem, Segwit is not really the solution. They must think of the new way and it must be really fast.
This is the main problem of bitcoin that must be answered. If these is not answered fast then there will come a time that problems will be more and more complicating emerging from the past problems.
That is what the people from Bitcoin Unlimited will tell you. The real solution is for Bitcoin to have a scalable network working on top of it. Bitcoin itself will still be useful as a settlement layer. Please also be aware that politics and the quest for control is a key factor on why many do not want to activate Segwit.
Didn't we stumpled upon Bitcoin to get away from intermediate layers? Those additional layers tend to held open their hands for some feeees. That nickle'n'dime concept.
A successfull cyber currency could handle bazillions of transfers for nuthin'
Everything below that line isn't exactly a revolution. Bitcoin has to change, to reach these promises.