Every big tech company gives massive amounts of stock. I would guess more multi-millionaires have been created by Google, Meta, Amazon, and Apple than any other companies or industry ever.
The fastest way for anyone hear to make 7 figures right now would be to join a series D startup and with some luck their stock grants will 2-5x in a year or two.
Levels.fyi did some analysis where it showed the average software engineer who joined Anthropic 2+ years ago are going to be making 10M this year given the valuation increases (and yes they have liquidity events, you don't have to wait for an IPO).
Even for less hocky-stick growth companies, people can make life changing amounts of money for RSU growth.
Personally, even working for a well established company, Over ~3 years, I've made an additional 500k in equity from stock appreciation (not from holding the stock, I mean when granted) beyond what my target compensation was intended.