I think all the operators will create this sort of ecosystem by Q2/Q3 2012. Its a no-brainer. As long as they all have DPI capabilities, I see no reason why they wouldn't offer somthing like this (with a Fair-Usage Policy ofc).
And what would the terms and conditions of the flat-rated data be? To use as you please, or for browsing only? Android and iOS devices use data in a different way than BlackBerry so this has to be taken into consideration when structuring flat-rated data packages.
Interesting. Would be interesting to find out more on how this works etc. I would imagine it would work with a different APN which then routes your traffice through a server that will compress data and implement fair usage policies and throttling (if this is the case). To get access to the APN it will need to be paid for as a VAS before it gets provisioned on your number also I guess.
It's obviously going to be some R79 package where you get 150mb full speed and throttled to 128kbps afterwards like their "uncapped" packages. Rather just go get 3GB from 8ta for R150 or 500mb from CellC for R50.