Let's say our theoretical company has a SaaS product for which we charge $xx per month. The product is entirely web based and the backend includes GPL code.
As I understand it, since our product is not actually "distributed" it is not bound by the GPL license.
However, let's say some of our big clients are willing to pay top dollar for a local deployment that they can run within their own intranet. We are in a position to do that for them. Perhaps by preloading our product on a server workstation and physically shipping it to the client.
Would GPL apply to this latter arrangement? Ie- would we have to provide the entire source code for our product?