Commercial use of ham bands?....Already here!
I agree totally with your arguments in defense of a genuine, experimental and amateur use of the amateur radio bands.
Unfortunatelly our bands of 24, 28, 144 and 430-440 MHz here in Brazil, specially in the huge metropolitan areas like São Paulo-Rio de Janeiro (and spreading to countryside) are, every day more, becoming clandestine bands, mostly occupied by thousands (thats right, thousands!) of non-licensed stations, commercial and non-commercial.
These bands are becoming "luxury" Family Radio or Citizen Band frequencies.
This occurs because it is very easy to acquire ham radio equipments in the free-trade zones in the border with Paraguay and also in the main streets of the big cities, in which informal sellers offer freely these equipments without suffering any harm or control by the authorities... That's right, Amateur Radio in these bands are every day more difficult to be executed in the sense of the law, of the good tradition and of the fair citizenship and education; in my personall opinion our noble activity is dead in the large cities of Brazil!
If you consider these statements "excessive" or "too radical", tune the frequencies of 24.935, 24.945, 24.955 and so on, in 10 kHz intervals, and you'll confirm this. These frequencies were invaded by thousands of truck drivers that cross the country; try to explain them they're wrong...