i suggest giving back ALL of the controls and find a "better" place (though there isnt one, so i dont see what you are complaining about).
in my mind, DevExpress can do whatever they like with my money, as long as i get the support for the controls i purchased and constant updates (which they do and is inbelievable) and the source code. Plain and Simple.
In the end you are purchasing a license, you dont "own" the rights, if DevExpress decide to offer up a couple of free controls then good on them, this will increase their customer base, customers "should" purchase more controls, DevExpress hire more developers as their client base ramps up, add more products to the ever expanding suite, and in the end "we" the Clients WIN! So its really a WIN WIN for everyone.
So to all at DevExpress. Keep up the good work!