UEFA probably sees the CWC as a threat. It's a direct challenge to the Champions League for attention and money. Doubt they want it in Europe anytime soon… as a football fan I want it to succeed.
Discussion
I think you have space the game is evolving fast
For me the reshaped UCL last season also was amazing the new format Gizzzz
But honestly i think the biggest rival to UCL is the Premier League, they are oN average week iN week out, the best football oN display