Lets think practically..what ever amount railways getting is much more than a rajdhani as its not having concession fares and quota's. Also more fare system.
Whether it offers what kind of quality , premium felicities people won't think , they will just need a ticket on his budget on that day. Also whether they go to end or get down in middle don't change any thing to railways. Its just a business nothing more, who ever like they will travel. So operating premium with 70% occupancy also will bring money to railways than a Raj do.