I'd say almost no one gets a 30%+ increase staying in the same company. There was a short period between 2019 and ~2022 when tech was hiring like crazy and you could just hop from job to job for huge increases every 6 months to a year.
The problem is that is now over, and so wages are back to being suppressed again.
The problem is that is now over, and so wages are back to being suppressed again.