Upgrade to Comcast Business.
They won't be capping business accounts. Sure it is going to cost you more (not that much), but no cap!
Since you are a software developer, and probably have either a LLC, or S-Corp, you can write the cost off on your taxes, which I am sure you do now as part of your "home office".
Plus they give some more services with their business account. No, I don't work for crapcast, but have used their biz offering for my company in remote locations with good results. Could be worse, cap could be 250 gigs a month. I am sure AT&T DSL "pending" cap for 3-6meg customers is just waiting in the wings