[2D] Unable to move objects in Scene View

I had this problem, but no sprite renderer in any camera. Just close the Scene tab and open it again in Window menu. That solved problem for me.

An easy miss is the "move selected object button". Make sure this is selected.

I experienced this issue without sprite renderers. In my case, I had capslock on for some reason, which means that when you click on something again, it triggers a "group select" box instead of moving the object you've selected.

Caps lock. Who knew...

Hope it helps someone: I had objects scaled negatively on some axes instead of rotating them and this cause for those objects to be un-selectable in the scene view. Fixed it by rotating instead of scaling them. Cheers!