I thought web 2.0 was supposed to be easier sharing,

I'd say it was what, web 2.5 (?) where many started raising the drawbridges and closing off the wall gardens; making it harder to explore / share.

google, fbook, even insta, and I'm sure others purposefully making it harder for the little sites to be discovered, kind of the opposite of what web 2.0 was supposed to bring.