That's a substantial fee for a human making $100k per year (plus taxes), but I don't think we should be comparing what's a reasonable fine for a person vs a business.
In a year with like 300% revenue growth, I feel like Zoom can probably just treat this fine as cost of doing business. I mean, I pay a lot more than $3k in taxes per year!
Most businesses are structured such that failing isn't disastrous (creditors cannot chase after the owners), whereas a human experiencing financial failure is an extreme life setback.
Corporations lose one day of revenue and continue with business as usual.