Matthew.maz15you see thats where you're sorta wrong... when you get your ski edge, its still very soft for a metal and hasnt gone through very much pressure. As you ski the edge, the impacts and use/abuse that the ski get will compress the metal on your edge. once the edges become compressed, they harden, become brittle and cracks begin to develop... a soft edge "should" theoretically compress if it has gone through any significant impact, not crack.
This is not correct, ski edges do not compress, they may shave, bend and warp, but compression is not one of a ski edge property. If they are compressing it is because they are also getting wider and pushing into the ski. Imagine flattening a thing of silly putty with a book. That effect.
Anyway, depending on damage you may get some companies to warantee the skis even after rail use. Head gave me a new pair after about 20 days on one of their sets when an entire edge pulled out from the tip of the ski. Be aware that if by some chance you get a warantee, some companies will take on the order of MONTHS not weeks to get you a new set. You are getting a free pair of 400+ dollar sticks, they are not in a hurry to get them to you.
Many people seriously under estimate the abuse you can put a pair of park skis through and still have them ride decently. I have a pair of k2 presses that are 4 seasons old now, and are finally to the point where I only pull them out on days I will be doing grass gaps and metal stair sets. I epoxed large chunks of the edges back in numorous times and it works well. Its only when you lose the edge bits that things start to get a bit jenky. Still, I rode that pair the first 2 weeks of the season and they were missing probably 6 inches of edge overall and I could hit rails in the park with no issue.