Adoption is being done on since the past years and its amazing on how many countries are already accepting bitcoin. And not just a country but those countries are really well known for having a good market and economy, like Japan and South Korea.
Did you ever see it implemented? We are not yet there how come you ended up with that opinion. LOL
Personal speculation just like many on btctalk. I have high hopes for LN and right now, with btc transactions way better and faster than a few months ago, it seems SegWit is doing what it's supposed to do.