I think Koodo should offer a tablet data plan that's incremental per usage. So you could start with 1Gb a month, then if you go over you get automatically switched to the 2Gb price or the 5Gb price and so on. Then you could get data on your tablet or phone that doesn't need voice or texts.
I think offering only internet and not voice is planning for the future because if you're speaking on VOIP on 3G or LTE you don't need a phone connection and voicemail and texts.
The future is here, we might as well embrace it instead of trying to prevent it. You can probably make good money out of it too.