Boris, the Vpaint developer, states that
most animation studios wouldn't take the risk to touch a GPL code, as, depending how it's done, it could legally bind them to make their proprietary in-house software available to the world under the GPL.
I have no idea how animation studios think and work so this may be true, but is this fear in any way founded? AFAIK, anyone can use eg. Inkscape for anything and do with the result whatever they please, no? I couldn't imagine a company being legally binded to make proprietary software available under GPL just because they made a logo in Inkscape and incorporated it in the rest of their work/creations? Or how does this work? Is this fear he describes more like paranoia, or is it founded?
I know it all depends on the specific GPL license in question, but let's take Inkscape as an example...