Is there any site or organisations that are around for the purpose of buying these kind of things? Kind of kickstarter but more larger payments for a percentage

Is there any site or organisations that are around for the purpose of buying these kind of things? Kind of kickstarter but more larger payments for a percentage of a large purchase? I suppose kind of like a timeshare, but not a rip off? I've come across 1 thing like this myself, which is a car club, you pay £10k and you get X days per year to drive the cars in their selection but you also own something like 5% of the company that owns the cars. I'd be very interested in other kind of group buying things like this.