I wouldn't be so sure that it'll be on Blu-Ray/4K Ultra HD Blu-Ray. There are quite a few streaming-only television shows that haven't made their way over. Even if it does, I wouldn't expect for a couple of years.
Agreed that it might be a while, but most streaming shows tend to make their way to DVD/BR, after a year or two. Trek particularly seems a good candidate as they know Trekkies like to own the DVD's.
But anything is possible, and we'll know if/when The Good Fight shows up on home media, which will be a year old in February.