Two wrongs don't make a right
Unethical behavior should not be excused. Legalities aside, Google was assuring everyone that they had interest only in adverts, NOT hardware.
Nexus' T-Mobile deal is not cheaper or better than the rest, so the end users gain nothing. Besides, phone manufacturers like Motorola, experience the largest problems. They have already spent a lot on advertising their phones AND Android, which Google picks up for free by being the original thing. To add insult to injury, Nexus runs a new version of Android not supplied to the other partners. Google is not in the game for the end users. Actually by being bigger and more resourceful they can push the users around easier.
I have to say the obvious here, bad business practices are prevailing throughout the western world. They are the result of sloppy legislation, deliberately drafted with humongous loopholes. It is ludicrous to think that any private company will "do no evil" and keep themselves from exploiting the loopholes.
Corruption in government and private enterprise is the reason for these problems. They can't be fixed by anything other than responsible and active population... and that's nowhere to be found.