To quote Steve Rambam from HOPE: "If you're angry about what the NSA is doing, you should be furious about what Google and Facebook are doing."
IMHO the Amazon Echo and similar beyond-Orwellian devices will someday be looked back upon with the same amount of "what were they thinking?!!?!" as stuff like: https://en.wikipedia.org/wiki/Demon_core
To continue with the nuclear analogy: I've been predicting a privacy/security "Chernobyl" event related to mobile and/or IoT for many years now. It'll be something like a corporate whistleblower revealing that a company has been running all ambient sound from all customers' houses through speech to text for over a year, then putting it all in a database and selling access more or less indiscriminately. Customers, it will come out, will include organized crime, foreign governments, etc., and some of the data will turn out to be from the homes of US Government Secret and Top Secret clearance employees, CXO level corporate personnel, police, etc. Only a matter of time. I'm counting the days.
I'd say by 2020 or so there will be a major well publicized leak or scandal from such a vendor.
It'd be hard to place a bet though, since it'd be hard to decide if/when a bet were actually won.
I'm not sure how other lines of betting work, but interested in proposals.
And, of course, we would have to agree on odds. Eg, if you are really sure you could offer to pay me 5 USD if your prediction comes true, but I'd only have to pay 1 USD otherwise. (Or if I feel more sure, I could offer eg to pay 7 USD for every 4 USD you wager.)
It's their business model:
More surveillance => most precise profiles on Internet users => most precise ad targeting => higher margin => more $$$