I'm personally rooting for "business decision" over "turning over a new leaf".
If FOSS support is motivated by a clear profit motive, then it'll be viewed positively by shareholders and stick around no matter who is in charge. If FOSS support comes from "turning over a new leaf", it could be dropped at a moment's notice in response to a leadership change.
IMO we will always see far better FOSS support from the private sector when the time they invest has a positive ROI that is obvious and easy to brag about in a quarterly earnings call.
Incentives trump feelings for publicly traded companies 99 times out of 100. People constantly anthropomorphize them, but they aren't people (regardless of similarities in the law), and they definitely don't act like people, at least normal ones. At best, you can view them as something like a sociopath. I wouldn't look at a sociopath acting nicer and think "oh, they turned over a new leaf" because they aren't just going to change how their mind works, I'd think "oh, they found a reason to act in a way I like for the time being. I hope it isn't short lived."