This was inevitable. All the above-mentioned services are funded - in large part - by ads. When it came to choosing between serving the users vs. the advertisers the latter would always win in the long run because they were the paying customers.
What's needed is some sort of "public" space on the internet that's not controlled by corporate (and increasingly advertising) interests. Non-profits like Wikipedia and archive.org come close, but aren't meant for real time communication. Ironically, technologies like SMS are also somewhat neutral because they were conceived before advertising became the dominant business model on mobile and have no hooks for "curation" and "engagement".