communicating with their product support folks via twitter. It literally saves hours waiting for email responses
Then the vendor is literally incompetent. There is _no_ reason why email should take hours to get a response.
Thus why the first thing I do in a new apartment is change the locks.
In certain jurisdictions this is illegal without a court order.
Suppose a 10 year old walks up to a cashier at a Walmart, dumps 50 candy bars on the belt, and hands the cashier a credit card with no adult in sight. The cashier rings it up and charges the card. The kid opens all the candy and gives it away to friends, eats it, whatever. Later the adult discovers that the kid took his card out of his wallet when he wasn't looking and complains to his credit card company.
Not quite. Your analogy is missing the part where the adult walked up with the 10 year old and told the cashier that the child was allowed to use the credit card, and then left. That's not to say that Android should probably have multiuser capabilities across all devices, a device administrator designation, and an account setting about "auth once" vs. "auth for 30 mins" on wallet access.
They aren't, they're willing to go to court to protect their mishaps
Welcome to the results of a litigious society. If Google makes a change then people will hold that up in court and say "Look, your honor, if they weren't doing anything wrong, why did they change it? Therefore they must have been screwing everybody over, SUE! SUE! SUE!"
Increasingly however, what the school does is utterly irrelevant. Almost all the students have their own completely independent access to the big bad 'net.
Which makes it Not Their Problem. They have a requirement (whether legislation, policy, or politics) to secure their network. What Jimmy does on their cellphone is now the telco's problem.