You imply that Bitcoin dominance might not start rising again, quoting Andreas that due to the high fees and long processing of transactions, there are not many reasons for it... but what about the Lightning network??

There are people who already set it up. It's working, it's right there, within the reach of our hands. If we can actually start using it to purchase things, which is in foreseeable future, there will actually not be many arguments left against the Bitcoin dominance. Because, let's admit it, vast majority of altcoins are pure Sh*tcoins, only rip-offs of Bitcoin with very little added value, used only for speculation...
(disclaimer: I actually haven't set up a lightning node, just thought this sticker is funny.)