I seriously doubt any traders or hedge funds will go to Schwab from IB. Sophisticated traders know that free commissions aren’t worth the price of bad execution, and commissions are already quite low. IB has very good execution, Schwab not so much.
But will they use crappy IBKR Lite or TOS @ SCHW?
I think the cheap crowd goes to SCHW. And if IB doesn't communicate well their better execution, they will suffer as well. If IB wants the crowd they are going to have to do something. Tough to convert the crowd to IBKR PRO if they all trade at SCHW.