1. Maybe but if that guy and his friends make up the 99% of the network (In theory) Why would they listen to the 1% of little guys running 2 or 3 units at home or a handful in a DC?
Majority of retail investors I'm learning have no clue at all how this works and are entering based on fomo or trusting the guy that does understand.
In reality they don't though, and ideally that situation never arises. Although, retailers might be entering due to fear of missing out, that isn't necessarily a bad thing. It should bring in competition, and prices should actually lower due to that competition, which should be seen as a good thing, as it reduces the amount of centralisation at least partly.
We don't need the retailers to know every intrigue detail, we just need them to create efficient machines, that's all. Which, they definitely know how to do as they've been doing it before Bitcoin was around.