Any multi platform GUI toolkit with a cross-compilable language will give you twice the functionality in half the development time over HTML+CSS+JavaScript.
Hundreds of companies have tried to solve this exact problem for years and already did the cost/benefit analysis. It turns out that writing almost all of your code exactly once is cheaper than doing it in the multiple stacks that would be required with whatever your dream architecture is. They are not idiots just because you want them to be.
You sound like someone with zero practical experience in this area who just wants to rant about code purity. The rest of us are trying to get shit done while you pine for a perfect technology stack that will never exist.
These laws are intentionally toothless. Google will eat the fines and the feds can pretend they won something.
Nothing will change until we start imprisoning executives who break the law.