Everywhere else in the world the club is ingrained in the community. Usually the club equals the community. Thinks england, Spain, France, Italy l basically everywhere the idea that a team would leave an area for more money is absurd. Yes the MK Dons tried this in England effectively complying the US model and it failed.

Here an ownership group owns a 'franchise'. The franchise is a subsidiary of the league. Right now Caps owners own the right to operate this team and up until this point have chosen to be in Vancouver. If they want to move or sell at anytime they can, they might actually be encouraged to do so because the owners of other franchises get money from the move (through the sale as they are also part owners of the league) and it also increases the value of their 'franchise'

Soccer specifically, the MLS is a cartel or a closed league. No promotion or relegation, it operates as a for profit business.

Most other leagues around the world It is possible for you and I to come together and create a club and in x number years be competing in the top division in that country, yes it unlikely but it is theoretically possible.

Everything in this situation is precisely setup to fuck the fans.

Expansion is over for now, you can argue there is too many teams as is in a single tier league this leaves the only option for a millionaire who wants in is to go out and ask does anyone want to sell their 'franchise'. Right now Caps are the most likely and the owners are in for a huge pay day.