Sorry but I dont think that's even close to being accurate. Google makes thousands of hires each year, a vast majority of them will be through normal hiring processes (from their competitors or college) and definitely not acquisitions or high profile. You only hear about the acquisitions and high profile hires because normal non-high profile devs hires do not make good news/blog articles. Creating a startup in hope of getting bought out by Google is like wishing to win the lottery.