There was a single billionaire on that sub. Just one. There were two businessmen, one with his son, and a well known diver. It wasn’t a sub full of billionaires. Certainly they were all wealthy, no question there. But your reaction can only be “Good, they deserved it” if you think the deaths of the others (including the 19 year-old, who had no control over what family he was born into) are worth the death of the billionaire.
It’s a response fundamentally lacking in empathy. You’re asking us to have empathy for the person who isn’t displaying empathy.
Sure, he cut a lot of safety corners. This is the epitome of “fuck around and find out”. It’s even ironic.
But we can still have empathy. Being stupid about it doesn’t mean that they didn’t leave families behind.
Your link is for wireless transmissions going through water. In this case, it’s still going through air.
It’s not the altitude or depth that matters, it’s the medium through which the signal goes. It will work just fine, from a technical standpoint.
That being said, wireless things are inherently unreliable compared to wired, and it’s stupid to make something so important not as reliable as possible.