That all changed with big data and marketing. Now, every native app company, and every library those native apps use, has an incentive to mine your machine for data and then use and or sell that data. And further, the vectors for exploits of various native apps have increased as well and the always connected nature of our devices has increased the incentives.
Many people complain about MacOS's new security features. Me, I love them and I don't think they go far enough. Sure I want control of my machine. I don't want to secede control to Apple. But that to me is what MacOS (not iOS) is delivering (or attempting to deliver). Stop every app from doing anything without permission. Give me way to grant that permission if I really want. I wish Windows would do the same. I wish all Steam games were sandboxed.
In other words, getting all that cool tech from the 80s to be secure and privacy respecting is a ton of work.
And now, a period of reinvestment in the bottom layers and signs of a diasporic divergence emerging. Movements that are ideologically different from yesteryear's FOSS, and a tightening of SV's grip on events that increasingly causes sand to pour through, new purposings of old tech and roads previously untaken. It's like Alan Kay put it: The future is the past AND the present.