Concerning the bigger countries that have hosted Summer Olympics in terms of economy/political relevance/population size we have
USA (will host in 2028)
France (will host in 2024)
Japan 2020
G.Britain 2012
Australia 2000 Canada 1976
Germany 1972
Italy 1960
And from major emerging economies
Brazil 2016
China 2008 Russia (as USSR) 1980
My view for the countries that hosted SOG long time ago:
Russia because of doping is excluded as potential host in forthcoming future.
Germany, they give too much importance on the cost of the games as we saw in 2022 WOG and 2024 SOG process when the citizens of Munich and Hamburg respectivelyrejected the bids
Italy has the same financial issues as Spain and lack strong government support . They won 2026 Winter Olympics however due to the fact that about 85% of competition venues already existed
So which country is left? Canada/Toronto!!