Oh, of course.
Well, I think one of the reasons for that not being implemented nowadays is the fact that it would lead to unnecessary contention. See to the recent closing of the RCD for an example of why.
It would be nice if you could rent venues for a certain amount of time — but what would happen with evicted items? Again, contention and nastiness bleeding over from the simulated world to the users.
Alternatives: I think you can ask a GM to lock–down items of yours which would make for a stall somewhere. Almost like a brick–and–mortar shop.
First off, I hope you don't mind I reply here but it's more fitting I think.
I'll be honest and say that I only know the RCD as either the seized and closed building or the public use space that it is now. But given what little I know about it it turned to a situation where a small group/one person controlled the building and it stopped being a place for the benefit of the public. This most likely is wrong so please correct it if I'm fundamentally wrong.
This type of contention would not be present as a shop would be owned/rented by a single character and wouldn't be allowed to be sold to another character or rented out to another character. (both reselling and re-renting would create undesirable situations in my opinion).
Therefore the only contention arising is from characters not doing anything with their shops and gms evicting characters?
The first, is a problem which I don't think there is a real solution for except if all those hiring would accept the decision from either a GM, a commitee or another entity. Something like that is easy to get people to agree to until something they don't like happens, then there would be contention.
As for evicted items, they could be held in storage by one of the gms(whom supposedly evicted them) or in a bunch of crates or the like in a gm only location. After a while all items could be "destroyed"/"converted" into tria (or something) except the "special" ones at discretion of the person handling it.
I think that as long as it is clear that you may be evicted at the discretion of a gm, that it is possible to lose any items you place inside, that you wouldn't lose your items immediately and you have some ability to protect against abuse from GMs (just in case it were to occur) then I think that dissent about it would be minimal and worth it.
As to the alternative: I'm failing to see the difference between that and asking a gm for a personal building to use as a shop from a minimize contention point of view, from a functional view however it lacks the inherent physical storage a shop building would provide as any items not locked down by a gm could be taken by anyone.