That’s another good theory. Beds with legs would be less likely to be infested, perhaps?
Yeah, bedbugs are introduced somehow and they can’t get at sleeping humans and can’t breed and lay eggs before they starve. Bedbugs introduced to a place where they can crawl up easily to feed on sleeping humans can then breed and lay eggs. But many seem to pick them up from hotels, and the beds have legs. Maybe hotels are not where they feed and breed, but are dropped off by folks infested from home. They can go pretty long without feeding.
Freegards
No they climb up legs unless you spread diatomaceous earth around them or in something they are lifted onto/into or some other trick I read by a poster.