You wrote some false comments in your last post, lostclimate. Here is an interview where you can read that the indie version did not made too much money for the Unity makers:
http://www.gamasutra.com/php-bin/news_index.php?story=25840
"Unity Indie isn't generating a significant portion of our revenue, and we've always had this vision of democratizing our tools."

And here is a blog about it:
http://blogs.unity3d.com/
"Unity Indie was a cool product... But also it’s not been a significant part of our business at all: Unity Pro, Unity Wii and Unity iPhone for the bulk of our (rapidly growing) livelyhood."



Yes, and the same pro users can make it with Ogre, Irrlicht or Unity Indie, while not spending money.
The point of spending money is: getting a better work flow or a more powerful engine, better documentation and access to more platforms for your final product. You get what you pay for.

I dont think so
Lets say

Unity Indie == 3dgs Com
UnityPro == 3dgs Pro

Apparently most of Unity revenues come from UnityPro
Assumimg that the member's share is 50/50 than about 13 % of the Unity incomes should be generated by the Indie version,
It is not an negligible amount of money , in my opinion, such as to justifiy a free version
I must suppose then that , let's say 80 % of the Unity members own the Pro version
I dont think thatthis is the case for 3dgs

There is something strange

Their business of course