I have shifted to using open source products and installing them on my own servers wherever possible.
And this is what big guys want to as well, they want to discourage users to put trust with small guys. perhaps I am wrong, but it's kindda apparent.
As far as I can tell, the "we're out of money and are shutting down" has become "we got acqui-hired and are shutting down". Same result for the users.
Probably not, but the model has shifted and there's a greater offering of services nowadays. Given the choice available and all the niches covered, it's very easy to start using one of them and coming to rely on it for some facet of your life/work, only to have it shut down with little prior notice and leaving you out to dry.
The parent's point is that if you use locally running software without any dependencies on external services you're much more secure in the event you need to migrate away from them, since you can do it at your own pace and with much more control over the entire process. Also, if you're using FOSS, it makes it less likely the support will just cease since, if there's enough interest, someone else (even you) can carry it forward.