Again, it comes down to where the user is from. While $30 might seem like a small amount in the US, it is a big amount in remote places in the world. It comes down to whether and by how much you want to restrict node usage. Do you want nodes only to be run by people in 1st world countries?
Just curious, how many people who consider $30 a large sum of money currently run nodes? How would it matter if Angola got a few? Describe in detail plz.
My point either...
if they cant afford 30$, they probably dont have internet or even a computer, so... whats the point? they wont be using bitcoin anyway.