It's hard to do a meaningful comparison, because most freelancers create their own definition of success. It's one of the great things about freelancing! Success might include learning extra skills, launching new business ideas, developing personal projects, improving mental health or spending more time with family. None of which are part of a 'conventional' career path within a business. As a freelancer, I'm often tempted to compare myself with my peers who are working inside a company structure - particularly if times are tough - but I've never found it very useful. Freelancing is much more about finding your own way and your own definition of success.