blocksize in bitcoin WAS raised, substantially, since the 1mb limit was introduced. Being a bcash person you are probably not familiar with the technical details of segwit, but you should probably study it.

As for lightning being a "failure" that really weird since I use it quite often as a payment system. So whatever failure you're referring to, I haven't seen it. In fact I used lightning less than an hour ago to buy some fruit at a street vendor.

The vendor didn't take bcash, not that I have any. But they took lightning.