Not very related, but something bizarre I realized my brain assumed existed but on reflection seems rather bizarre to have arisen unprompted might not at all so I'm wondering if it does: A class of people who'd find it well worth the money-time transaction on paper, but have some combination of non-enormous houses and sensitive stuff in it that'd mean instructing someone to be able to clean without causing more damage than they fix and puting everything in places where you wont find it etc. would take longer than just doing it yourself.