There seems to be some kind of a cultural difference on this between the US and most of Europe. I don't really know what to expect in the rest of the world, but if TBlaxland is right, then even Australia (which is culturally similar to the US) is more Europe-like on this point. It might well be that in most 'non-US countries' there are laws that invalidate 'unreasonable' clauses in contracts, or at least people believe there should be such laws. (*)There is nothing illegal about allowing Amazon to access your machine if that is what you and they agreed on when you subscribed to their service.
By my way of thinking there are very few contract clauses that should be illegal, provided all parties agree in informed consent. Slavery, for instance, or a suicide pact. Allowing someone else to access your property is not illegal.
Without such laws, the big problem is that almost nobody reads those licenses carefully before purchasing, and by far most people completely ignore them. You can call this stupid, but this simply is reality of how people behave. This is partly caused by the fact that most contracts written by US lawyers are extremely long.
As a result, companies usually get away with placing extremely unreasonable clauses in their contracts. Usually, the number of boycotters is not commercially significant. And even if you want to boycot it, it's often impossible to avoid, except for free(**) data.
We sometimes have commercials from a non-profit organization, warning against the dangers of smoking, alcohol, drugs & so on. Maybe we should also have such warning commercials about the dangers of DRM and unreasonable licenses.
I'd also like to see a public debate on whether the government should prohibit DRM, instead of protect it.
I think the problem with DRM is that there seems to be no escape from it, at least for the moment. Sure, I can choose not to buy a Kindle, but is there some other way for me to benefit from this new technology without being trapped in the web of DRM and losing all control over things I buy?
(*) This in itself doesn't mean you're wrong, of course. The majority isn't always right. I'm just observing the difference.
(**) Free as in 'free speech': free software, creative commons, public domain & so on.