I had an employer that believed its pay policy was market-competitive, and therefore did not entertain requests for pay rises without proof that you were not being paid a market rate. In practice, that meant interviewing for another job elsewhere and getting an offer at the higher salary.

I did that, and got my 1.5x offer. My employer dutifully offered to match it, but by that point I liked the idea of the new job better anyway. They panicked and made further offers and desperate manoeuvres to keep me, but it was too late.

I am certain they still have that policy in place.