> An Uber for home cleaning was never going to work because it is tough to commoditize inviting someone into your home and both the cleaner and the user have an incentive to cut out the middle man as soon as a solid working relationship is established.

Eh, I've started using Helpling in Singapore (on-demand home cleaning service) that seems to be quite stable/successful.

Of course, I doubt they're Uber-scale profitable, and I don't know how much capital they're burning (if any), but there definitely seems to be business value there.