Gross receipts tax of 0.69% plus 1.5% payroll tax [1]. $20,000 trash cans [2] and arcane permitting processes for brick and mortar businesses. The city's leadership has their head so far up their ass about going after rich techies that they proposed a tax which was intended to target Amazon, but was so poorly written that they asked to retract it off the ballot because Amazon wasn't subject to the tax but small businesses were [3].
[1] https://ballotpedia.org/San_Francisco,_California,_Propositi...
[2] https://sfstandard.com/politics/heres-what-a-san-francisco-2...
[3] https://www.sfchronicle.com/sf/article/S-F-activists-wanted-...