Weirdly eightsleep apparently is sending 16GB of data per month worth of telemetry. It's been pointed out that that's about enough for a live audio stream of everything that happens in your bedroom. It can't be cheap to process that much data.

These wifi based smart home devices just fundamentally don't serve their customers.

1. You pay money for a device

2. You pay money for monthly service

3. They sell your private data on the backend, not to worry though, it's "anonymized", but of course it gets sold and then deanonymized

4. AWS goes down and your house doesn't work

5. Eventually they go out of business or get bored and you have to buy and install all new stuff.