Oh you will come to learn the true costs of running a masternode my friend.
The key thing about the miners is that they simply have to be good at mathematics to prove their worth. They need to hash fast and nothing else.
They don't need to hash fast at all, PoW exists to try and ensure decentralisation of whatever that total hash is, that's all.
The remaining coins are scarce, and more and more people want to be the first ones to harvest those coins.
That's the simple explanation why miners need to hash faster and faster.
Sure, you can hash slow if you like, ok ok! But don't complain when a faster miner eats all the coins away.
