Pave (and many other comp platforms) are prolifically used in the UK and across the EU because no individuals personal data is being shared. Pave doesn't get told 'louthy is a software engineer and gets paid £50k a year' - they get a list of job titles, seniority, and salaries but no identifiable data.
In the EU there are definitely companies providing aggregated salary band norms, in fact utilizing them is nearly required by upcoming EU directives as salaries must be justified by HR. In the Netherlands I know Bureau Baarda is gathering and selling data.
