It still boils down to "Too many people are moving in and building more housing units is not an option."
The rent control and eviction problems are a symptom of exploding rent rates. Prop 13 is fucked up, but all it's doing here is taking pressure off of the city to say "screw you guys, we're building huge apartment complexes" because the tax revenue from those complexes isn't enough to tip the scales.
SF has basically two options:
- Build more housing
- Convince people (and companies!) to move away.
Option #1 is considered a non-starter by many current residents, but how to achieve #2 without ruining the city is an unsolved problem.