Great article. I also believe that the BTC price will dramatically grow in the next few years. I am also a fan of IOTA. I know that IOTA will replace bitcoin in many many areas. Especially the micropayments as bitcoin allows me too few transactions per second and I believe it could take a while until the Lightning feature will be added. Especially because of the miners who are scared about this development.

IOTA is definitely cool but the problem is here the missing incentive (because no mining is needed for transactions). There could be other cryptos like Verge, PivX or Monero which will be still used for the black markets and could turn the market cap up. But most of the non-techies only know bitcoin. That's also the reason why bitcoin is the winner of the race even if it's a bit outdated.