Not enough vegies to meet the guidelines of the nutritionists

I've often wondered what would happen if we all started following the recommendations of the food police and now I know. Well, I know one thing. There would not be enough vegetables to go around.
National Public Radio reported this week that while the U.S. Department of Agriculture's own dietary guidelines recommend that adults consume 2.5 to 3 cups of vegetables a day, its researchers had  found that only 1.7 cups per person are available.

"The dietary guidelines promote variety," Jeanine Bentley, a social science analyst at the USDA's Economic Research Service, tells The Salt. "But when you look at it, there isn't much variety. Mostly people consume potatoes, tomatoes and lettuce." (The data technically tally domestic production and imports, then subtract exports, but researchers commonly use them as a proxy for consumption.)
The federal dietary guidelines do not recommend relying primarily on potatoes, tomatoes and lettuce for most of our vegetable needs. They prescribe a varied mix that includes dark leafy greens, orange and yellow vegetables, and beans—along with those potatoes and tomatoes. And they want us to eat them because they help reduce the risk for heart disease, stroke and some cancers as well as help keep us at a healthy weight.
So the vegetables that are available don't really match what we're supposed to be eating.

So what vegetables are Americans actually eating. Here's a summary from the USDA website:

Potatoes, tomatoes, and lettuce make up close to 60 percent of U.S. vegetable and legume availability

When consumers are advised in the produce aisle that “More Matters,” they are not just being encouraged to eat a greater quantity of fruits and vegetables, but more variety as well. Restricting one’s diet to a limited set of vegetables precludes the desired variety that would supply more diverse, healthful nutrients. According to ERS’s Food Availability data, just three vegetables—white potatoes, tomatoes, and lettuce—accounted for 59 percent of the vegetables and legumes that were available for consumption in 2013. White potatoes accounted for 30 percent of the 384.4 pounds per person of vegetables and legumes available in 2013. Tomatoes had a 22-percent share, with 20.2 pounds per person of fresh tomatoes and 65.9 pounds per person of processed tomatoes. Fresh lettuce (head lettuce, romaine, and leaf lettuce) rounded out the top 3 vegetables at 25.5 pounds per person—7 percent of 2013’s total vegetable and legume availability.