I think there should be more major cities like SF.<p>The reason is that this will cause infrastructure to be built. While I am (still) living in Europe and have very good infrastructure as someone interested into technology I fear that such developments could cause infrastructure to mainly be built at certain cities making everyone else living in some kind of desert, which could cause places to be underdeveloped, which leads to inequality, which then leads to unused potential, which is generally a problem that people see way too seldom these days. If you have people that are poor and stuff this means you loose potential, which means you waste the chance of someone bringing everyone forward, which maybe causes the next Einstein (just to make a point) to become a criminal instead of solving problems and creating amazing technologies.<p>One could see it as evolution. If the first humans had have bad luck, because of being at a bad spot, where intelligence wouldn't have helped at all, there was a drought period or just a predator or a virus, maybe even a meteorite they could have just gone extinct and could have exterminated a race that now can be considered dominant.<p>You could also see this with genes, like the one that causes western people to be able to drink milk. If the first individuals had back luck we probably wouldn't have that option now.<p>So every time you prevent someone from having the right infrastructure, eduction, society, life and if it's just the money you potentially prevent someone from solving the biggest problems.<p>Yes, one can argue that someone smart could make his life everywhere, but people need to learn this first. No matter how smart you are, if you just don't know you can do it that way, because you have no examples and no parents that tell you to make something out of yourself and instead society just reinforces you to do something different or bad you won't become a scientist, even if you'd have the potential for a Nobel Prize, unless something causes you to find it out, have self-esteem, etc.<p>So, it's okay to build nice technology cities and invest money in certain areas and places, but it would not only be bad, but also dumb if this makes you forget about the rest.