Usually hosters that do this are "professional" and have multiple listings or ways to mitigate it. One is tools that auto-update multiple platforms to keep them

Usually hosters that do this are "professional" and have multiple listings or ways to mitigate it. One is tools that auto-update multiple platforms to keep them in-sync, leaving only small "timing" windows where there could be a double booking. Another is to simply phone the renter and offer another place (if they have multiples right next to eachother which is often the case), or give some sort of discount, etc. Essentially, it's a "solved" problem at this point and is on the level of being a commodity.