Recently I'm watching online shopping website and found out most of them are removing a useful feature which allows users to compare products.
Some leading brands like Amazon and Newegg don't let user to compare. Even I realized that some websites like Target, DickSmith, RadioShack and etc which formerly had this feature, now have removed it.
Are these brands following some new studies which proves comparsion should be removed? If no, how all of them are doing the same?