This is true in a lot of industries - if you're lucky enough to be a developer it isn't though. If you have skills and feel like you've hit a ceiling for advancement then shift companies - a lot of organizations have limits of how much they'll pay technical employees that are far below the limits on management but there are organizations that would treasure your skills and compensate you appropriately.

I will say that it's hard to avoid moving into leadership positions as your gain seniority - if you have issues mentoring others, estimating project and leading a discussion then your options are more limited but there are still some good opportunities out there for you especially if you're willing to be frank about any social anxiety that contributes to those weaknesses.