Such law already exists and it goes like this: if you don't want your data to be used don't post it on the Internet. It works perfectly. Every single time. Try it.
As someone who also switched from SVN to git many years ago I understand this "is this really worth it" thing. It came to my mind many times in the beginning when I said to myself "do we really need a distributed SCM if everyone are always working against the same server anyways".
But putting git's technical advantages aside, for me, one of its most important values is that it has become de facto industry standard. It's like IP/TCP/UDP protocols which everyone understands be it a tiny IoT device or 10K-core cluster.
With all this enormous amount of programming languages, frameworks and tools we have in the industry it's so nice we've managed to agree, at least, upon one very important element of our work.
I own Pixel 2XL (released in 2017). It has an amazing camera which can compete with any modern phone camera, great battery life, no bloatware, excellent performance. Best phone a ever had - really zero issues. Not only I wouldn't switch to other OEM, I can't even find a good reason to upgrade.