I largely agree with you. The problem with your arguments is that you take it for granted we will be at status quo. We won't. There will be regulations. There will be tougher requirements for polo and trex. And bitshares or to be precise: the bitshares ecosystem won't sit on their fingers.
Openledger is scaling up to onboard up to 10 000(!) a day
Cryptonomex is finally going to show some of their marketing genius. It's getting late and it's been talked a lot about it.
Various developers are developing cutting edge solutions
The last updates to the dex has largely removed annoying bugs.