The "free stack" you are using is partly only free because someone else is paying for it (your employer/IBM...) - so they actually are subscriptions in my eyes.

The "free stack" you are using is partly only free because someone else is paying for it (your employer/IBM...) - so they actually are subscriptions in my eyes. (slightly off topic: Germany tax authorities would see it similarly: The benefits you get from work could be called "monetary benefits" in Germany and the value added to your income for taxing purposes.)