>>http://www.businessinsider.com/tom-tato-grows-potatoes-and-tomatoes-2013-9
>>
>>http://www.stuff.co.nz/nelson-mail/features/lifestyle/9218071/Potato-Tom-opens-fresh-doors
>
>Note where it says "you need to buy more every year"... I think the goal is to have sterile plants like this squeeze the regular plants out of the market, to the point when nobody knows how to grow them and nobody has the seeds. I've seen this kind of propaganda - met people who doubt that you can just take seeds out of a regular tomato and plant them (which we regularly do) and they believe the only way is to buy seeds. Even for heirloom cultivars.
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>The ultimate goal is that a few big corporations own all the food on the planet. And water, if possible. That will be interesting times indeed, a new kind of dictatorship, or hydraulic despotism.

Most of your arguments would be true of GM varieties - but in this instance it's just a small company producing what is really just a gimmick.
Each plant would have to be individually grafted - a labour-intensive process which probably won't leave them with much of a profit margin....

P.S. I wonder if they could graft, say, tobacco or chillies instead ?