Wrong
If I was an organisation like Western Union or the IMF (who can print fiat money, so it's essentially cost free to them), I would set up a mining farm, sell all the BTC for profit, and block any attempts to upgrade the Bitcoin network. I'd design a hard fork that screws Bitcoin up, and employ loads of trolls to promote it.
Bad actors can and do mine BTC. You're very naive
With your logic no group can be trusted to make network improvements that aren't intended to harm the network.
Nodes can be faked or spoofed, miners can hard fork to bad outcome, users really don't give a crap, they just want faster tx.
Are we stuck with Bitcoin as is forever, and the only scaling solutions must be built on top of the current utterly fixed ruleset?