I don't know what qualifies as "massive base salaries" but most folks in Support (the team I worked on) were on around $70k+ USD base compensation.
Profit sharing happened twice a year, but I don't remember it ever going above 10% of your six-monthly compensation rate (so effectively, you got 20% at most).
It's a remote first company so i don't think most people in the support team live in San Francisco.
I don't think 70k for a support position is that bad.