Is it corporate greed, arrogance, indifference, or some other reason that compels a company to essentially "stick it" to their customers?
Have they broken their contract with you? The contract you agreed to at the time of purchase? If you've changed your mind since then, aren't you free to sell your license to someone else? Greed would be if VSL forced you to buy their products against your will; so this doesn't look like greed to me. Please learn not to sign contracts you dislike; this should solve your feeling that companies are "sticking it to you". When you buy a product, you don't get a slave you can order around; you only get what was in the agreement.
VSL could add value to their products by adding insurance against lost/stolen keys.
You sound like a "letter of the law" type person. Nobody is claiming that they are not within their LEGAL rights. Rather, in the court of public opinion, they could do better by their customers; those individuals that fund their operations are speaking loudly and repeatedly that they are not comfortable with the terms imposed upon them and would like to see VSL seek a more amenable solution that protects both VSL's interests and the significant investments of their customers in VSL's products. Your metaphor about buying a "slave to order around" serves no purpose other than to offer a colourful analogy that doesn't even make sense. By the way, as you might know if you're in business, making efforts to address and allay the concerns of your customers will go further to benefitting your long term interests than stubbornly standing your ground based on legal terms and conditions. VSL is capable of changing and/or modifying their licensing system; the question is, do they see a long term gain in satisfying their customers' requests. Oh, I'll learn not to sign contracts I don't like, when you learn not to be so condescending.