So, because the number of teams will continue to be large, will we now have only multiple countries hosting the future world cups?
I don't think it will be like that, it sounds like an organization hell.
But it might be the plan of FIFA. Maybe this tournament is getting too big, and they need to get many countries on board to get enough money for them.
Having more countries will cut the costs of building new stadiums or improving the actual ones by only one nation to having multiple nations that will divide this charge while enjoying more profits from having more games.
It is all commercial business.