Of course it matters. Suppose that there are 100K home and garage miners, each of them averagely have 1T hash power, they are totaling 100P hash which is more than 1/4 of the network hash, and their number will grow with more and more industry mining operations fall apart due to unprofitable operation. Those miners will move their hash power between different pools to reflect their opinion
Home miners are not profit oriented, mostly treat it like a game, this is their biggest advantage over speculative mining farms
Hash power is your vote in the bitcoin ecosystem, just like a voting ticket, but it is not one vote per person, so rich people will get more vote, that is a fact. Anyway better than current monetary system where you definitely have no right to vote anything
The only incentive here is an ideological one and that is just not enough.
These are not fansy numbers, but a very conservative estimation, I guess the real numbers is much higher than this. If you look at early days of mining, many people treat this as a hobby/game and they pay lots of money/time to play with the hardware/software, continuously build up the network hash power. And later, there are others with long term plan, treating mining as infrastructure investment towards a global financial system. They all contributed lots of time and money in the process, thus of course hold more rights to vote for the future of the system
The real ideology is to change the rules of a global financial system by just talking