Not really. Take for example the common potato, today I doubt you can get more than 6 varieties at your supermarket at any one time.

In the UK there are around 30 common varieties, with dozens of specialist varieties, which need to be searched out if you want a change of texture and taste.

http://www.lovepotatoes.co.uk/the-potato/

The problem here is the consumer education, as many folks in reality don't even know where a potato comes from let alone what variety of potato is suited to what recipe or meal. Some can't even tell the difference between a turnip, a beetroot and a potato and I have even heard of some folks eating rhubarb leaves, but I suspect this is a urban myth.

If you analyse the amount of space given over to high profit industrially produced value added products (microwave meals, vast isles of sugary (HFCS) bottled liquids and potato chips etc) in supermarkets at the expense of consumer choice of fruits and vegatable varieties, it all becomes clear that the main problem is actually the consumer. Salad doesn't come in a nitrogen filled clear plastic baggy. In the past sometimes you used get a free slug or snail. Today this would be completely unacceptable.