I'm quite pro Free Software but I think that analogy is stretching it too much. In fact, I think it's so hyperbolic it ends up working against the point you're trying to make, which is one I agree with (e.g., I really like Mathematica, but I'm teaching my kid Sage for now).
I meant to say that offering Mathematica free at an early stage of the educational process for improved chance of lock-in later in life is a point I agree is bad. I'm not opposed to proprietary software, in fact I use some, but I do not like that sort of lock-in practice.
I stand by the fact that the comparison to drug dealers is not true.
There's a very, very long path from legal but shady (to me) business practices to things like engaging in all out war with rival dealers, getting people hooked on stuff that in many cases renders them zombies, torturing and killing people that owe you money or that get in your way, forcing rural people to plant what you want or getting them killed or displaces, which are all part of the things drug dealers do. Not even the Microsoft from the 90s was comparable to that.
So, to try and restate my original reply in a hopefully clearer way: I agree with the point you're trying to make, but I think the analogy you chose may go against it for some readers.
