Stihl isn't interested in the wallyworld market, Home Depot, Walmart, etc. That just cheapens their product line, like deere mowers and others who stoop so low to get every penny of market share. IMO, it's just not worth selling junk product just to gain whatever small percentage of market share.
I'm not saying all products sold at big boxes are junk, just that to compete on that level the product are forced to be of lower overall quality.
I went through this just recently when buying a gas pressure washer. The 2013 leftover Dewalt branded 3100psi model was marked down from around $600 when it first came out to yellow tag, out the door discount of $425. I figured good name, Dewalt, so I grabbed it on the way out, bought the 3 year extended and got it home. Read the online reviews which gave it around 64% /OK. Most reviews slammed the Chinese pump for leaking almost immediately and need to wait 6 weeks or more while the pump mfg. jerked around, NO help from DeWalt whatsoever- everyone referred to the pump mfg.
I looked for other brands, and found Generac; similar setup and around $600 with a known to be reliable pump, and a 94% positive rating in the reviews. Bought it from HD off their net site. Haven't decided whether to buy an extended since I shelled out the $600 instead of the $425 cost.
Home Depot knows and so does Dewalt and their Chinese licensed pump Co. that they are selling junk that one way or another will come back to bite us, the retail customer on the arse. It sux but they don't care whatsoever; it's all on us as consumers to try to beat them at their rigged game. With things like powersaws, chainsaws in particular I want to go to someone who knows their product line features, etc. Chainsaws aren't like shopping for a circular saw. Most circ saws will cut wood. Most chainsaws will too. In my experience, I want a chainsaw and a knowledgeable shop to sell and service the saw. If that cost me more it's well worth it.