I look at 900k$ and think wow from the perspective of my very well paid job in France.
Getting 900k$ a year would bring great things to me and probably make me retire earlier. This will not be life-changing though.
And then I think about people who earn 5% of what I do and for them multiplying their income by two would probably be truly life changing for them.
And then these 900k$ do not look that wow anymore.
Doubling salary post-tax will at the very least put you at a 50% savings rate, and that yields a time from zero to financial independence of 16.5 years. Assuming historically-similar stock market returns and a safe withdrawal rate of 4%. This relationship does not depend on absolute numbers beyond those stated above, only savings rate.
Most likely you'd not be starting from zero and having a positive savings rate already. Whether you'd be comfortable doing this is a different question. Many would never be, and hence never completely comfortable retiring.