The JEDI contract was lot more competitive, AWS was technically on par or ahead of Azure, and they looked likely to be the front runners.
Facebook/Occulus likely may not have been technically eligible- Holo lens and Occulus Rift are quite different platforms[1], or less likely Facebook was not interested in the deal[2].
[1] Typical for enterprise contracts, vendors make sure the specs are custom fit for their products before the requirement becomes public, dictating the specs is most desirable way to win a deal as vendor.
[2] Given the size of deal unlikely FB was not interested, perhaps their B2G/B2M sales is not as strong as Microsoft to be able to win a deal this size.
Facebook/Occulus likely may not have been technically eligible- Holo lens and Occulus Rift are quite different platforms[1], or less likely Facebook was not interested in the deal[2].
[1] Typical for enterprise contracts, vendors make sure the specs are custom fit for their products before the requirement becomes public, dictating the specs is most desirable way to win a deal as vendor.
[2] Given the size of deal unlikely FB was not interested, perhaps their B2G/B2M sales is not as strong as Microsoft to be able to win a deal this size.