After shut off, allowed to get business class with no hassles
Yes, you can still sign up for business class service. I went over a 2nd time in December and was recently shut off. Surprisingly, they never actually called to tell me my service was cancelled. I called in to tech support to inquire why my modem wasn't receiving an IP and the lady was basically like "Huh? You don't have internet service with us."
Anyway, I signed up for business class and there weren't any issues, the cancellation was never mentioned. When they asked why I was signing up for business class service, I told them it was due to bandwidth issues with my residential service. The lady said that they "don't currently have any bandwidth limitations on their business service" but it's possible they would be put into place in the future. She assured me that I would be informed if that ever happened.