Tech startups don't create the kinds of jobs that the 99% actually need. Oh, sure, many of them will eventually hire one secretary, and will pay into their building's contract for one part-time janitor.
I have to admit that saying they're jobs we don't need sounds a bit misguided. Who says? Why wouldn't they be? Are you suggesting we shouldn't have a technical work force? That's what it sounds like... but if I were to guess how you'd respond if asked that, you'd say that's not what you're trying to say at all.
That being said, technology already permeates every industry. Even service, manufacturing, construction, and it continues to increase more and more every year. There's a growing need (and gap) in tuning our workforce to be more technical. Hence the growing calls for pushing math, science, and technology in schools. While there will always be a need for blue collar jobs like manufacturing/construction/service for the foreseeable future, those won't last in the same state as they do today either. So it's kind of inevitable. And in reference to exporting those jobs exported oversees, you probably already know the same jobs would only be a 100th in size over here because of the automation we'd employ.
As for taxes in my opinion, we already have a sliding scale that almost works OK. If we could eliminate some "loopholes" - first being special treatment on specific types of income like dividends and capital gains and instead treat them as ordinary income - second eliminate all interest deductions including mortgage interest. I believe those changes alone (allowing for no exceptions) we'd fix 80% of our tax problems and also simplify taxes for everyone across the board.