Don't think brokerage will dominate the market, but it will definitely get its own niche.
I got interested in cTrader a long time ago, but all cTrader brokers were not like this', as they don't offer variety of features and don't accept scalpers. That brokerage does this and it's really nice.
I contacted the support and they answered that 'scalpers are welcomed', so I'm testing it now. In general, I'm satissfied.