Not a sarcastic question; instead, I really would like your take. How do you see it that richer folks benefit more from infrastructure?
Richer folks generally gain the majority of their income from capital gains, through stocks, etc.
The corporations that provide those capital gains use roads, trains, airports, etc, in a much greater amount than the average American.
In addition, they benefit from the protection of the military, police, fire departments etc, much more than the average person. Case in point would be military intervention to protect overseas business interests.
Finally, corporations use a much larger percentage of US natural resources than the average Joe: oil, iron, etc.
Now, I'm not saying that the average person makes no use of these resources, but corporations benefit from them at a higher percentage.
As direct beneficiaries of the proceeds from these corporations, the rich, while not directly using these resources, are definitely benefitting financially from their use, which works out to be the same thing in the end.