greed is essential.
I mean the stupid kind of greed that would rather take a bigger slice of a smaller pie.
Which would you prefer, 100% block reward of a $300 coin or 80% of the block reward of $1,000 coin, giving the rest to full node operators.
The same argument applies if you increase blocksize. The cost of mining a bigger block is lower than the increased value to the network, which will likely make the coins more useful and valuable.