I canât believe someone hasnât tried to start a replacement brokerage company because of the void left now that TOS no longer exists. There are really only two companies trying to offer stocks, futures, and options on both. If you donât care for IB for one reason or another, there is really no alternative now that TOS has been destroyed by TDA. Seems like a pretty easy business model, just copy what TOS used to do, and even if you are not really profitable, just wait for one of the big guys to buy you out.