Great news that ThemeForest is looking at this issue because it may get out of control - seen more of it lately as Theme devs feel they have to do it to compete in that market place.

All that will come of it in the end is that we will all get a bad name out of it. Coens comment about the infinite support Loop is right on the money - As WooThemes extension developers (WooCommerce Compare Products plugin) I have had first hand experience of a certain ThemeForrest Theme dev who purchased a Woothemes support License for the plugin and then bundled the script into a theme.

Then they come direct to use wanting support - of course we just sent them directly back to WooThemes where they purchased the License.

Here is the rub - of course they can take and do what they like with the script - maintain it, alter it whatever, but what they have been doing is when a Theme Client posts a support request about the script on their support forum they them that they will get the script devs to fix it (us). As was stated we have no idea what they have done with the code and no intention of touching it for them.

Bundling is a bad practice that in the long run will hurt all of us - Theme buyers and plugin developers alike.