Skimming through this article, while all these IE features are cool, they seem to have been created with no common strategy or goal other than to make something

Skimming through this article, while all these IE features are cool, they seem to have been created with no common strategy or goal other than to make something that another MS team thought useful, like MSXML for the Outlook Web Access team. The implementation of them seem to be totally inconsistant (sometimes weird nonstandard CSS syntax, weird meta tags, ".htc" files, etc. etc.), and very IE-specific, so it's almost impossible for other browsers to implement. This is the real reason why they cranked out all these weird features: to vendor-lock people into IE.