Makes sense ........... No need to alienate a big part of the trading community.
What if they don't want that part of the trading community? It's a platform designed for active traders. How many trades can you make when stuck with the pattern day trading limit? Also, I suspect that smaller accounts have a tendency to go to 0 faster than large accounts. So you get some guy that signs up, takes his $500 to $0 after a long option trade or two, and now the broker has to send that customer all kinds of prospectus, legal, proxy vote, tax, and other documentation even after he closes his account. They probably figured it's not worth the hassle.
Their platform sucks though. If they rebuild their platform I’d might be interested- but im not hoing to pay $200 month for DAS
I used to hate TWS, but now I actually really like it. It just took some time to get used to it. I used to like TD Ameritrade's mobile app better until TDA ruined it (at least for Android). TDA really screwed it up big time. Now I prefer IB's mobile app. Anyhow, I don't pay any data fees except for some $4 monthly charge for something and IB has a decent API. I don't know of any other broker that includes API access for free. And then for commissions / no assignment fee for options, can't beat IB.