What you said is actually illogical..
Why?
Apple already has:
- own wireless audio-video distribution protocol: Airplay
- own voice recognition engine: Siri
Apple will not buy a company purely in order to duplicate what it already has better of.
The only reason Apple would buy Sonos is to acquire product development teams, amplifier or loudspeaker technology, or a loyal community of customers that they can roll up into the apple brand.
NOT existing voice recognition technology.
Squeezebox was not "killed" by Sonos. They were overlapping markets but not the same.
These were two wanderers walking on the same highway at around the same time, not really direct competitors in the bigger picture.
Squeezebox was and still is (there remains a strong open source server and apps community) a music geek's product. Squeezeboxers want cutting edge options and customization. Squeezebox failed because Logitech could neither manage to make the products the geeks wanted, nor to use that core technology to make products for the masses that dont love music but use music as background noise.
Sonos is different - it is more targeted at like 40+ year old with money who wants the speakers that Apple would make - if Apple made speakers. And priced that way.
Sonos is very clearly angling and begging for Apple to buy them - because they have no future or cashout, as it is hard to see one of the bigger consumer audio companies giving them a lot of money for the company. You can see this angling by Sonos in for example their "White Paper" called MusicMakesItHome in which basically they have partnered with Apple to promote Apple music. Its just basic sucking up and begging.
And frankly they have to, because Apple can build and market own-developed powered speakers if it wanted to - and they would be much better than what Sonos offers. Probably cheaper too.