This could potentially spell a long-term sustainability of most climbing crags in the world, which are on some form of limestone/dolimite or similar. What happ

This could potentially spell a long-term sustainability of most climbing crags in the world, which are on some form of limestone/dolimite or similar. What happens is that thousands of climbing shoes with tiny bits of dirt eventually polish many holds, altering the routes and always for the worse since those really polished parts that everybody has to use become unreliable and everybody avoids them like plague. I was thinking of spraying a thin film of some acid or similar to make surface rough again, but this eventually wears down the rock (although it could probably last few centuries till you run out of it). Anybody knows about anything actually being done, instead of me just fantasizing?