Higher payroll taxes, less disposable income from tech employees, less money put into the market by the private sector in favor of taxes put in by the government. It is highly understood about the effect of economic multipliers between private industry spending and government. When will progressives ever learn?
On that note, businesses: There are many states who would give many tax incentives for moving your company to the city/state. Texas, Washington...even NY...
SF and it's voters apparently do not want you...time to go somewhere that does.