I am in a very similar position. Ableton and some other, smaller stuff is the only program that keeps me from switching to Linux fulltime. Bitwig did not click for me yet, I have to give it a try again soon. But the problem of unopenable projects persist. There are roumors, that the push 3 standalone runs a Linux port of ableton. So maaaybe there will be a Linux version in the future? That would be wild! Until then I just dualboot. I will soon reinstall my windows partition for ableton only… I am pretty shure if bigger companies would start supporting Linux, it would take off like crazy