Very true. On most bows, it's pretty easy to keep the strand count high enough for proper strength and adjust end serving diameter to fit the cam groove. It's also important to periodically thoroughly wax the complete end serving. This helps protect the serving from the cam If you eliminate any cam lean that may be present, you can ususally get the end servings to last a long time.

This is where making your own strings is a big advantage. Even custom string makers are generally not adjusting end serving diameter to match a particular cam. It becomes way too complicated to track every cam groove on the market. When you make your own, you can experiment to find which strands counts go with a particular end serving diameter, to match your cam.

I actually make my strings heavier than normal. I want the most durable string I can shoot and I also prefer the quieter shot that results. I often go with a couple extra strands and then use the smallest diameter end serving. I put them on using Brownell Liquied Lok and Cam EZ to help stablilize and protect the serving.