Nothing… they arent actually being kicked out. There would be multimillion dollar lawsuits all over the country if it was happening. The last time i heard about people being denied service was because they supported Trump.
I remember when Sarah Huckabee Sanders and her group were kicked out of that Virginia restaurant not long after Trump was elected. That was the first incident that made national headlines. We've taken it in the shorts, as has Trump for well over 7 years now. You'd think the feeding frenzy would have died down by now.