[SmokingJoe]

Once an internet system achieves ‘network effect’ and ‘market power’ it's nearly impossible for a new entrant to dislodge them.

AOL and Netscape say, “Hello”.

[Pelham]

AOL was a closed system. Closed systems died when the World Wide Web showed up.

Netscape was/is a broswer. Mozilla Firefox is its current incarnation

[Dave W]

That was in a different era and that is not social media.