It is always good to try something new just like the say that changes is constant in life,the most interesting part of the matches will be played in U.S.A,while the Group stage will be played in the three different countries, I guess,there might be a certain number of people that will be accepted in the world cup.
We shouldn't think that using the three country will be a big challenge in the tournament,we will have 48 countries to be present in the world cup,the population will be more than those that went to Qatar because all the 48 countries fans and supporters will love to go from different part of the world. Like said USA and Canada have more population than Qatar and,only one country will not be able to contain these countries because on their own,they are already have large population.
This is going to be an amazing opportunity for 3 countries who got chance to host world cup 2026. As we know football os the most famous sport in the world and football fans are crazy to go watch games ,this initiative will help 3 countries to host football and earn revenues . In this way load will not be on one country as football grounds and setup for world cup is a heavy task financially.
This will definitely promote tourist and may be visa policy will be flexible this time for football fans.