Not necessarily. A lot of people are critical of Microsoft's restrictive Office file formats. A lot of people are critical of Adobe's Flash. ePub's DRM may be controlled by Adobe, but they license it out. And even then a lot of people avoid DRMed ePubs.

It's not Apple that people hate. It's Apple's business practices. And yes, we are more than disgruntled when other businesses use the same tactics. It's also worth considering that different people draw the line at different places and we're critical of different businesses because of that. Some people want completely open standards, others are fine with royalty free and non-discriminatory licensing of standards, and a whole bunch of people are okay with royalties of licensed technology. Yet we all agree upon one thing in the end: we don't want to be locked into a particular vendor.