The problem is that even the tech savvy and security conscious can't keep track and...
Yup, and that's why it is so important that we keep raising awareness. So people will support regulatory efforts like the GDPR and California's new online privacy law. Rather than approve one of Trump's first acts which was to give ISPs more access to commercial use of customer data.
Having too many regulations sucks but well-crafted ones can almost nullify the potential harm.
"Use that data internally as much as you want, but you can't share it. And you can only use your own platform data"
It doesn't matter how many new data points are created then. Shareholders aren't going to keep agreeing with multiple $5bn (and higher) fines every year. That will eventually lead to changes in the board room and on executive level.
Of course, then the battlefield becomes what consists of own platform data. Amazon owns RING so that's platform data. Facebook WiFi requires location access to be set to always ON, so that's own platform data even if it's the pages/businesses who use FB who provide the WiFi.
The more people understand the potential of data harvesting and profiling, the closer we come to potential solid regulations. Only those can eventually protect us and your data is worth that protection. It truly is.