Another way to look at this is that Microsoft, Google, Apple, et al are in the business of providing products and services to regular people, for a low cost. This means they end up providing ways to escrow keys, recover locked accounts and so on that are weak. Not because they want to provide back doors for TLAs but because to provide strong security would be so expensive they couldn't meet the price point for regular customers. If, for example, MS only provided disk encryption that relied on a smart card or a memorized strong passphrase at boot/wake, they'd go out of business providing support to people who forgot their passphrase and being sued by people who lost their data.