The company I'm with since 2015, was founded in 1989 and has been fully remote since that time.
As a remote working for 8+ years, I found the initial transition difficult (came from brick and mortar) but now I cannot imagine going back to that.
The collaboration and spontaneous connections work just fine remote, at least they have in my experiences.
I once used a variety of services, but now use Dropbox (free version) exclusively. It does what I need and I prefer their privacy based model (in comparison to other set-it-and-forget-it solutions).