I'm sure you've already thought about this but bear in mind that as a buyer, I don't want to hear "unlimited" for things that have material scaling costs for my service providers, it just sounds unsustainable and likely to change later or be the cause of an issue.
On the other hand being free from arbitrary limits is great.
i have been involved in quite a few code escrow agreements but none that were actually used. i'd be curious to hear any stories about cases where that did happen.
in my experience it has just been a way to help business decision makers credibly claim they are managing risk when buying from a startup
WGU was a customer when I was at Learning Objects, they always impressed me visionary and outcome oriented. glad to hear a positive anecdote more than 10 years later.
yes, i was part of doing something like this at a small elearning startup for one of the largest publishers in the world circa 2010.
Exactly as you say, brought in to provide the tech platform for a strategic initiative involving a transformative shift to digital-first courseware and content.
in the future our personal editors will create our own editions of these books. mine will have an even longer captain crunch section and yours will be abbreviated