I was recently speaking with a member of this group about this very issue. I work in higher education and about 10 years ago our university moved to Google as the primary provider of email and cloud storage. Apparently, at the time, Google was offering no and low cost options as a way to break into an area controlled by Microsoft. Shortly after that transition I began my foray into Google app development with my first script being a form that submitted a PO request to a spreadsheet and automatically replied with the next number on the sheet. That application is still running today and I'm not sure my skill level has advanced much since then :). However, a couple of months ago the university announced that we would be transitioning to Microsoft cloud storage, Outlook would become the default email client and our storage on Google Drive would be dramatically reduced. I believe the default allocation will become 5gb of storage on Drive - I currently use nearly 2TB. We have been "encouraged" to move from Google Chat to MS Teams, do document collaboration on Office365 and embrace Power Automate for task automation. Having spent several years assisting one large administrative unit move all their paper forms to Google forms supported by Apps Script applications, this was disappointing news. I'm not privy to all the high-level negotiations involved in these agreements but from what I can gather, Google's original approach was to give away the razor and the blades, in hopes of one day dramatically raising the cost of the blades. It seems we've arrived at that day.
It doesn't appear that we will lose our Google functionality and there will be ways to pool storage to continue doing what we need. But the fact is, units that are accustomed to using applications "off the shelf" are already moving into Power Automate (not actually a scripting application as I understand it) and migrating to Teams and O365 to do collaborative activities which will require us playing in that sandbox. It's obvious I will need to improve my VBA and TypeScript skills and possibly convert some applications. The frustrating thought is that at some time in the future, Microsoft will likely raise prices on their razor blades and Google will offer them at a steep discount and we'll go full circle.
If your organization has gone through this scenario before, I would be interested in your observations of how to best navigate the process.
I appreciate the help this group has provided over these many years,