I know this is probably impossible because the "actual" investors wouldn't be able to cash out, but it would seem to make sense to me for companies like AirBnB and Uber to be organized as host/driver co-ops, with the "corporate" services like ops/marketing/engineering being subordinate to the interests of the workers (hosts/drivers), who also happen to be the owners of the majority of the actual capital stock (apartments and cars). Nothing would even need to change from the customer perspective, very little would need to change in terms of the technology. AirBnB employees would just be working for hosts instead of the other way around.

Many agricultural co-ops work like this. You probably are more familiar with the brand names these co-ops employ than their actual organization: Oceanspray cranberries and Florida's Natural orange juice are two you probably know about. These are co-ops where the farmers who produce the oranges and cranberries have pooled to do all the things necessary to actually sell their product on a national market, like advertising and running processing plants (i.e. squeezing the oranges, packing the cranberries) but farmers still own and harvest their own crops. It's not really that radical an idea, and seems to make even more sense in the case of AirBnB where the actual capital needs of the centralized entity (an app) are much less expensive than the physical plant needed to handle gigatons of produce.