This is robinhood's fault. He's not wrong that instant (or same day) settlement would be better than T+2, but there were plenty of other brokers that did not restrict trading. This was a liquidity issue for robinhood. This is a risk you run being a "cool startup that moves fast and breaks things" in the arena of securities trading. Additionally, Some of the bugs they've experienced are absurd in the context of a brok…
The biggest reason is that none of those world class institutions can actually build a functioning smartphone app