What's more annoying is I can browse all the content on iTunes on the Mac but if I click on anything it takes me to a Safari page which says '.. only available

What's more annoying is I can browse all the content on iTunes on the Mac but if I click on anything it takes me to a Safari page which says '.. only available on iPhone and iPad'. Why? Some suggest that it will be back and right now they are decluttering iTunes and it'll be broken into multiple apps. I'm not too hopeful.