Re: This is not...
I think the comparison is apt, but not in the way you intended.
Not for rooms, but there *are* locked implements in your own home for which you do not have the key.
Typically, they are the utilities: your connection to the gas, water, electricity, phone, is a locked box, or at best, a locked meter, which is not your property, and you are not allowed to open or tamper with them.
So Google would be on a stronger footing than it appears if you consider that payment is indeed an utility.
Since I rather agree with you on the whole, I'd love to have a better metaphor :)