A tree service guy whose gear I've started repairing who uses mainly Stihl says he has to wait forever for parts and the dealer to do a repair, leaving him unable to work. I'm good at locating anything on the internet and can usually find OEM parts Fleabay or grey market for him and have them within days and get him back to work. Then there's the issue that some dealers stock and know a little, some stock and know a lot. In this neck of the woods with next to no forestry, it's mostly lawn and tree service gear and nothing bigger and not a lot of saw knowledge.
I appreciate what Stihl was trying to do initially with their internet sales ban in trying to protect dealers and support local businesses. But given their poor/erratic distribution, it's driving people away from them more and more. Selling pro gear without offering pro service is not a good business plan. Getting parts fast so pros can get back to work is a big part of that. As Stihl's focus seems to be increasingly consumer-oriented, I don't hold out much hope that someone at corporate will get a clue and fix the problem. I get the impression it's because dealers are all individual little franchises with their own relationship to Stihl, unconnected to each other in any way. So there's no looking in the computer and saying, oh, we don't have it, but they have it at the store over in such and such. Or, we don't have it, but we can get it from the local distributor in two days.