Could you then explain me at least why miners don't control the network? Because from my understanding they are the ones who control rules of creation of new blocks. It doesn't matter if your node starts to reject new blocks as long as miners opt for other block rules if you don't comply you won't then see any incoming blocks. What you could potentially do is do another fork another alt with lower hash power.
Example:
You're trying to buy a GPU from EggsRUs. You send BTC. Unbeknownst to you, the big mining pools have changed the rules to give themselves a 2100 BTC block reward every block forever. (Purists are calling the pools' coin MinerCoin.) Eggs, being a merchant, knows about this inflationary change - and doesn't like it. Your transaction quickly confirms on MinerCoin, but Eggs isn't looking for it on that chain. A rag tag collection of miners are still on the legacy chain. Eventually, your transaction does confirm on the legacy chain. With some delay, you get your GPU. At some point, the big pools attempt to cash out their new found riches, but alas, nobody with real money on the line will accept their coins.
TLDR summary: Users transacting real value determine which fork has value.