Respectfully, the bolded portion simply isn't true to the extent that you indicate.
Bed bugs are largely nocturnal and tend to retreat from feeding once finished to their hiding places. That tends to limit their mobility to a great extent and person to person contact is relatively rare. It's not impossible but is improbable. They don't jump. They don't have wings so cannot fly. They only crawl and relatively speaking, not very quickly. That's not to say they are slow, but they aren't cockroach fast either.
The most likely avenues for "contracting" bed bugs are through visiting infested areas and while hotels are the most likely avenue, there are plenty of stranger places you can get them. The Library across from the MTS Centre is nearly perpetually infested. There have been known infestations in movie theaters (none reported in Winnipeg). It's not inconceivable that they could transfer between luggage on an aircraft, though that's about as uncommon as person to person transfer.
Living in multi-tenant dwellings can be awful for just the reason, as Hammer is experiencing. They ain't quick, but they're mobile and move through walls from apartment to apartment quite readily. Hammer did nothing to bring this upon himself but gets to suffer nonetheless.
Gm0ney is absolutely correct that the reduction and restriction of insecticides with longer residual periods is largely responsible for the resurgence. The EPA in the U.S. (and their Canadian counterpart, the PMRA) was warned about this possibility when they eliminated most of the options - resistance to insecticides developing in insect populations is hardly unknown and certainly not uncommon. Basically we got what some of us expected and what the general population asked for via unintended consequences. There was a reason that pesticides were and are used for what they're used for. But the general public is not accepting of that reality.