If that IPO is under $20 I'm going to refinance my house and put it all on SONOS.

They're not buying anything, certainly not Spotify.  Sonos has a $1-3B valuation.  Spotify has a $40B valuation.

So, why would SONOS go public?...Not to buy, but to be bought. Who's buying?  One of the Big 3. Amazon, Google, Apple.

Amazon could use it, but only because the speaker is better than their current offering.

Google would want it, but only to stop Apple from buying it..It already works with Alexa, so it's not a great fit.

Apple needs it, their Apple Home sucks and this would give them a boost to get back in the game. The Sonos products are already very "Apple-esque".

All of these companies can buy Sonos with their pocket change...one of them will.  Just like Nest.