Ironically attaching your company to a movement like this will deter people from using it.
The whole reason to pay for software is to offload the liability to a 3rd-party. In simpler words: "As a company, I have this need and I don't want to solve it myself. Also, if I pay someone, I can sue them on contract breach just in case."
The legal part of the liability offload is key in the decision, because it requires ownership.
FOSS doesn't fulfill that requirement, therefore, adopting FOSS means the user owns the liability of using the software. Companies don't need or want more liability than they currently have to, less is better.
Ah management-style cover-your-ass engineering. Which doesn't work even with things like IBM contracts, never mind with anyone smaller. The problem is what they actually guarantee.
When you actually investigate the question (because you were a Google SRE and you move to a smaller company, and obviously disaster preparation starts with knowing what happens when disaster strikes): "Say, really smart manager, what does the contract actually say happens when you need the cover-your-ass provisions? Let's say AWS fails to give us machines. Let's say this software doesn't deliver. Let's say the bank connection we're paying for breaks". First observation: the managers (at a very big European telco) don't actually know the answer to this question. Or they pretend not to (I'm pretty sure they just lied to me, didn't care about anything but the checkmark, and did in fact know they did not have any option for disaster recovery because their developers had told them many times).
Answers: AWS doesn't give you a cent back, under any circumstances, does NOT get your servers back online but MAY give you 20% reduction on your future bill (and for customers in the UAE with the Iran war, they didn't)
Software doesn't deliver, then we don't have to pay the last milestone payment (10% of the cost), and the supplier does nothing anymore.
If the bank connection breaks, nothing happens. You are forced to keep paying anyway. Although, I guess you get the transaction cost for free because there won't bee any transactions. I do hear there's a small problem with that.
So, obviously, no, this does not cover the company's ass at all. It's about a manager being able to say they very cheaply did something. What will happen to the company in case of actual problems? It'll immediately cease to function, and none of these cover-your-ass provisions will matter at all. Which is, of course, what happened about 4 months later and the company's new SREs were expected to fix the shit ASAP, without ANY help from the "service" part of these platforms. We had to buy new services to get it fixed, once the service was down senior management literally got involved and approved the purchase orders, yelled at a bunch of infrastructure teams to make changes they never would and the company never got the money back from the "guaranteed" platforms. It cost about 15x, for that year, what it would have cost to have 2 providers for the service, and I'm sure that more than covered a development team for the software. And thank god we at least hosted our own source and made sure local builds worked.
By the way: they just switched to the newly ordered much more expensive platform. About 3 weeks later, focus was moved away, by management, from repairing stuff and so the ability to switch back was ... just dropped.