One thing others haven't mentioned is DNS. If your phone is trying to lookup Windows Update it's a surefire way of knowing this didn't originate in the phone.
I used to work on the server-side stuff for telecom devices. We designed hardware that went into customer homes, but only downloaded the (encrypted) firmware upon home activation as otherwise the Chinese manufacturers would have ripped us off and sold them to telecom companies without our cut.
So, realising they could copy our hardware, but didn't have our software, they responded by trying to hack my servers, multiple times, from the same IP they sent manufacturing data from. A quiet word with their management would stop it, and it'd start again a couple of days later.
These people have no shame, and if we are going to go for lowest cost at all times it is what manufacturers should expect to happen.
When on earth will Google give custom domains the full Google consumer experience? Like many people I did this before gsuite happened for my personal account and I'm happy to pay for this.
I still find that after being off Facebook for five years. Luckily the football team I hate the most has a URL that begins with f, so I started visiting that. Cured it in a week...
Good point. I used to work at a mobile startup that subsequently got acquired and burned - the run rate for a company of ~140 people was astronomical.
Radio engineers are expensive and rare, scopes and even faraday cages are expensive, specialist software is expensive, handsets were a fortune when you had to buy hundreds of them.
We got sold for (I think) about $330 million, then you look at social media startups that go for a couple of billion. Nobody wants to do stuff that changes the world for a reason.