It will continue to devour bad money, and as it accelerates, will be the catalyst for changing finance as it exists today -- and entire nations, too.
The number of transactions which can be handled per second used to be a problem, but that is no longer the case with blocks not being full. Scalability solutions will get developed. We have seen Segwit, Lightning Network,....
Indeed. I don't see scaling being the problem in the future. A lot of ICO projects out there are making a lot of tests to make millions of transactions per second that I know that can also be applied to bitcoin after.