I would consider water fountains to be part of public infrastructure and essential, and therefore doesn’t fit into the model that I’m putting forward.

I’m not proposing that essential things like roads, water etc. are segregated but, rather, private businesses can choose how they operate. The risk is public backlash and hurting the bottom line and other businesses can choose to be open and accepting.

For example, queer bars vs het bars. It’s not segregated per se, but a business can choose how they want to operate to draw in the customers they want.