There was a reason that anti-monopoly and anti-oligopoly legislation was created. The idea is that if one participant in he market is stronger than everybody else and can impose conditions, the 'free' in 'free market' is gone, and the outcome is bad for everyone except the monopolist. This is especially true in markets where the monopoly isn't natural, but bestowed by a law, like the copyrights. The logic is also true for monopsonies, i.e. buyers' markets.

Too bad that the government doesn't sue large corporations for violating those laws very often.

Okay, I'll try once again for you, professor Nitpick:

A piece of living flesh form a human body, the said piece consisting of bones, fat, muscle, skin, etc. in the proportions in which they are regularly found in such body; and having a rest mass of 1 kg in the coordinate system attached to the Earth will, when metabolized in the body of a healthy, average human, release approximately as much energy as will metabolizing, by the same organism, of food with energy content of 7700 kCal, as calculated in the database I mentioned further up.

In MKS units, these 7700 kCal will be about 32 megajoules.

Good enough?

How is it 'pretty evident' that a combination of exercise and food that keeps a person fit doesn't exist? On the contrary, as long as your metabolism doesn't differ from that of most people, science has not only established that there is such a combination, they even provide you with the formulas to calculate it yourself.

A body is a very complex system, so the formula isn't an exact law, but that's no limitation of the science behind it. It is hard because of the complexity, not because of lack of understanding of the laws at the base of the process.

Your body's 'hoarding mechanism' is only triggered if you lose more than (roughly) 5% of your body weight over a month or so. If you stay safely within this limit and you're okay.

The hard part is not eating too much, and that is not a scientific problem, but a problem of preference and habit.

No science can help you here, but if it provides means to make measurements easy (which it does), and if you're willing to put a bit of effort over the period of a year or so to create reasonable eating and food-buying habits, you can keep your weight in norm easily later on.

Utter bullshit. The easiest way to control weight is to exactly follow the scientific advice. I lost a lot of weight (about 25 kg over 6 months) by a simple system:
(Change in Weight (kg))/7700 = Calories I ate - Calories I used

The calculation is really simple and entirely based on nutrition science. For "Calories I ate", I used the free USDA nutrition database from, I think, Dept. of Agriculture (yep, here. http://ndb.nal.usda.gov/ndb/). For "Calories I used", I used the standard age-adjusted formulas you can find at the back of any nutrition text. For detection activity I used the android phone, Tasker and a small timesheet app.

Just for the kicks I kept a graph of the loss weight, and the fit to the "theoretical" weight loss has an R-squared upwards of 0.87 over more than a year. The body response is so precise, that even the occasional heavy meal registered the next day. No magic, no voodoo, just sticking to the 'scientific rules'.

7700 is the kCal in a kg body weight, if you're curious.

As for the nutrition, I stick to the good ole food pyramid. My (slightly high) cholesterol went to norm in the first year, and no problems whatsoever in 5 consecutive yearly checkups since I started the routine.

Within the chosen margin of error of measurement, it works, bitches.