> I think it's interesting that people forget anything network based tends to unwind just as fast as it winds up.

I think that largely depends on market dynamics.

For systems that benefit from strong, direct network effects, the vast majority of users will generally join whichever platform has the largest network. Once you are the clear market leader, you will enjoy fast(er) user growth. Even if your network starts to dwindle, most users will still gravitate to your platform so long as you maintain your market leadership.