I think we're going to see some divergence in the remote-work frenzy. I believe that when your product is still in an open-ended stage, and/or when your engineers are closer to the product side of things, there's still benefit to be had from in-person collaboration. Whiteboarding, ad hoc discussion, etc. Of course the older and bigger a company/product is, the less important this factor becomes, and the more suited they are to having everyone just do their work remotely and check it in. But I would wager that many smaller companies/startups will continue having physical offices even as this trend permeates.