Treewhisperer: As I see it -
from a layman's perspective, mind you
Exactly.
And many
(most?) devs are laymen when it comes to the business side.
GOG is what? 5% to 12% at the max of the whole market?
Is the possible
(not guaranteed!) plus on revenue worth the plus on work needed?
Do I constantly want to beg GOG for my money?
Those are two of the questions, every
(self-publishing) dev has to ask themselves.
Btw: there is no such thing as a simple continuation of a previously existing contract between two new business partners.
The old contract was between GOG and the publishers.
The publishers are out of the equation now.
The new contract would have to be between GOG and the
(now) self-publishing dev.
You can't simply scross out the name of the old business partner in a contract and replace them with a new one.