If you want a big payout, you're much better off working for Google for a couple years to build experience and a reputation, quitting and founding a startup, and then getting reacquired by Google in a $5-20M talent acquisition.
Most people I know at Google are there because they want to work on interesting technical problems without dealing with all the bullshit that comes from running your own business. Google is still very, very effective at that - quite possibly the best place in the world for an engineer that wants to do cool stuff, launch to millions of people, and not push their way through lots of hassles.