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It's not hard to articulate why: Nearly all the large numbers are beyond what anyone can actually pay. If you assume that the bet pays out at most 4 billion dollars, and simply can't pay more than that, suddenly the expected value is $32, instead of "infinite".

The math and discussion of infinity in the problem unnecessarily complicate it.

You could ask: You have a 10^-30 chance of winning $10^40, otherwise you'll win $1.

Based on expected utility you should pay a huge sum to play, based on the real world you should pay $1. (Adjust the large numbers as needed if you have an issue that that much money doesn't exist.)

I don’t think it’s hard to articulate why. The reason why is that expected value places too much emphasis on low probability edge cases.

With 75% probability, you make at most 4 dollars. There’s almost a 94% chance you make less than 40 dollars.

As humans, we evaluate improvable events as not mattering so much.