Only for small accounts. For large accounts with large transactions that fee is the least of your worries. Spread, execution quality, speed of transfers, margin and deposit rates, reliability/availability and yes, events like this or even the possibility of robinbros "breaking" some feature you rely on, would be. Don't be myopic.
I hope RH grows with its customers, otherwise it'll eventually be outgrown by them. One of the most obvious and biggest disruptions that still hasn't happened is to let you set a custom portfolio on autopilot. At the end of the day that's what anyone should want.
Can't you invest in a set of 5 passive ETFs and forget about it for 40 years? Or even build your own ETFs for that purpose: https://www.motif.com? Or are you talking about "if risk of market crash is too high, sell everything for a bit -- buy back in when this calms down" type stuff?
I mean things as simple as rebalancing, to a bit more complicated like tax management, or trading rules. I want the mechanics of portfolio management, but I don't want somebody else's portfolio. You're still choosing from somebody else's portfolio with Motif.
If somebody wants to disrupt, quant hedge fund for retail investors would be the one but I suspect it's never going to happen because of the perverse incentives that exist to not do that. There used to be the Quantopian-Robinhood method but neither side wanted to go in the direction. I don't see these firms as truly disruptive.
I hope RH grows with its customers, otherwise it'll eventually be outgrown by them. One of the most obvious and biggest disruptions that still hasn't happened is to let you set a custom portfolio on autopilot. At the end of the day that's what anyone should want.