Agree...the problem is the legal definition of 'unnecessary waste'. As you say, there should be a clause about environmental impact which should superseed the profit gial.
To pay somebody to dissasemble a working product or a product with working parts, just for market control should be severely punished, and long term products and re utilization processes should receive tax incentives.
But it's up to the Govt to regulate it.. the problem here is basically the Govt has become part of the legal dept of the big corporations...