I'd be a bit more sympathetic to Silicon Valley companies if they didn't send so much of their profits overseas to avoid paying the same taxes meatspace companies have a harder time avoiding: http://en.wikipedia.org/wiki/Double_Irish_arrangement
No one likes to pay more in taxes. But let's not confuse our whining and bellyaching for sound economic arguments. As one could expect, there's been such a flurry of these pieces with essentially the same argument, only different levels of histrionics. "The negative effects of higher taxes on investment growth are exponential.", etc