Lower latency is very, very far from the same thing as more bandwidth. Certain customers can benefit from the difference in latency. Not you, though.

Starlink will make those who would benefit (hedge funds, mainly) pay through the nose to get it. And, pay even more to keep somebody else from getting it. Probably they will charge a huge premium for 1ms faster than fiber, and 100x more for each ms better than that.

You may be certain they will not use that extra income to provide you better value.