I have sold sonos for many years. I find that my self and other installers that I spoke to can no longer sell the product. The idiotic pin code requirement for activation and having to update each unit as it is added to the system siply make the product too onerous to install.
As a regular consumer having to deal with one pin code on a speaker this may not be such a big deal. But as a professional putting in 8, 12, 20 + of them at once that are installed in a rack, it simply doesnt work. You have to label each unit prior to install with the mac and pin on the front which takes a lot of extra time, it also looks bad in a clean rack. Then you have to activate each one and run the update on each one as you add it instead of all at once after they are all added. You have turned a simple job into 15-20 minutes for each unit.
Now when I talk to clients and Sonos is brought up I explain how I had whole batches of connects go bad nearly all at once I would install 18 in a job and 18 months later 6 would all go bad within a few weeks of each other and I had this problem on multiple jobs and across most of the life span of the product, with the reason they all died being the only change. All accurate information I had one job we ended up having to replace most of the 18 originals with new ones that then died again in under 2 years with a different problem. I take the time to explain all of this so that I dont have to deal with this pain in the butt over priced product.
So not only do you not get these sales, you get a bad reputation.
The dumbest part of the whole thing is It did nothing. You already had to physically press the connect button meaning you have access to the unit. All about adopting a unit only. thats the only security this adds is making it harder to adopt a music player or speaker.
This has to be one of the dumbest things I have seen a company in the A/V market do.