tbf, when it's hosted in US and Canada and Mexico, they could push it to 5-6 kickoff times a day if they were clever with the time differences. Because they are such big countries. But they can't do this in 2030 if came back to, say, Spain and Portugal. Four kickoffs a day is really the limit for hosts that are all in the same time zone... 12pm, 3pm, 6pm, 9pm local time. And the last thing they want is more than one game on at the same time. That immediately splits the TV audience and hits the revenue, which is the whole point of making it bigger in the first place.