so, what's wrong for a team of 3-4 people, that got 500k of investments to set up shop in the US (if they wanted to)?
Really, what's wrong? As of right they have to go through insane amount of immigration hoops, and sensless paperwork.
The cost for running a business in the UK/Western eruope is pretty high. It might make sense for some startups to move to SV/SF anyways. At e least they will have a lot of raw talent in here, and a support net.
While the local economy will benefit from this too.
It seems like a win-win situation. If your "startup" is in India, then you might want to think twice about it, but if it is from a well developed country, where costs of living are comparable, SV becomes a lot more attractive once the stupid artificial immigrations barriers are lowered.