Now, the question becomes... do the tech startups get involved in the conversation and try to find ways to help the inevitable gentrification that is happening hurt those pushed out less than it otherwise would? Or do they just take the line the everyone is responsible for themselves, quit crying and get a better paying job!
There are real people being hurt by Silicon Valley, for no fault of their own. And lots of these people are very hard working people who just want to live in a nice place like everyone else. But because their 40 hour weeks only clear them a couple hundred bucks after taxes they get pushed out to some other area that is probably more crime ridden and dangerous. Other posters are correct, you get a very clear economic class system happening.