Anil Dash has a list of 10 internet laws that seem pretty accurate.
They all have exceptions, of course. Like Rule 8: When a company or industry is facing changes to its business due to technology, it will argue against the need for change based on the moral importance of its work, rather than trying to understand the social underpinnings.
Sometimes technological disruption is perfectly legit, and sometimes it’s actually undermining good things. And sometimes it’s both: Unlicensed amateur taxi drivers are not a great idea, but taxi commissions are also corrupt and unhelpful…
I’m not sure where that leads. But the list is definitely a good lens for thinking about business and marketing these days (and probably in the past as well, in most cases).