As franky1 has pointed out, there are certain rules that the miners have NO CONTROL over. For those rules, it doesn't matter how much computing power they can control. They could have 99.99% of all the block hashing power in the world, and if they tried to break any of those rules, ALL of the remaining 0.01% of the mining power AND the non-mining nodes, merchants, and users would simply ignore every block that they created.
Thanks, that is really helpful.
I think my misunderstanding comes from me confusing two very different topic. The rules VS the miners (asics) controlling more than 51% of the network's mining hash rate.
miners(asics) dont have hard drives or a OS for users to pre select transactions and create a block template
.. where pools have more then 51% of asics