Dire Bare
Legend
While I do have some Fantasy Grounds titles, I've never really used the app. It's my understanding that the digital format of the books on Fantasy Grounds requires the app. Unlike, say a PDF.No you didn't. You licensed access to content they own. You should read that license agreement you agreed to.
If SmiteWorks goes Poof, nothing happens to all those FG products you bought that are on your computer. You still have them.
Just like that hard copy book you might buy instead. Except it's much easier to secure your digital FG book than it will ever be to secure a print copy. I can backup my digital copies free to various online systems like Drive etc. Can give my backup to a family member who lives in a different house. Then if my house ever burns down, is flooded, or caught in a tornado I have 2 places to recover from. If I want to do the same with a physical book, I have to buy three copies of it.
If Fantasy Grounds the company goes poof, and they still have a downloadable version of their app . . . then yes, you still have those books. Until eventually the app no longer works with future computers. I'm pretty sure I can't get Master Tools (the official 3E app) to work on my Windows 11 device . . . that sort of thing.
Again, not worried about it, and SmiteWorks has pledged to honor book purchases after a future, hypothetical, demise of their company . . . but the Fantasy Grounds format doesn't travel like a PDF or EPUB.