Apple - Do you really think that such a proprietary and inflexible model as the app store is fiscally viable long term when compared with more open sources?
Microsoft - why does every other operating system you release leave so much to be desired, then you come out with a brilliant one? Why not just put in the work and study groups and do it right the FIRST time?
Google - what is your thought on open developement versus closed (IE linux vs Apple models for developement)
Biting the hand that feeds IT
