You can purchase a lidar vac for £70-80 now. Even if you only replaced the brains, that's a quarter of the price of a Oomwoo. The only upgrade I'd want is self-emptying. You'd probably have to relocate the charging contacts but it seems highly achievable.
Or you could break up an existing vac for the parts. You'd get the lidar, bumper, ToF, cliff sensors, motors and wheels, perhaps even some seals for your printed parts. Again, much cheaper, especially if you shop on the used market (I can get a whole working vac for the price of new wheels). All these robots use common parts so the risk of getting it wrong is very small.
My point is perhaps they could coalesce around a common white label option unit or set of parts currently sold as a vacuum.