Wait, when did they ever say it was okay?
Several occasions. Sometimes directly, sometimes indirectly. Palmer often makes the case that Occulus would be an open-ish platform. When discussing VR porn he said it wouldn't be sold/promoted on the Oculus store, but wouldn't be blocked. At times he compared the Rift to a monitor, that'd wouldn't pick what could be used with it. Conceptually, the project started as a hardware project to enable VR, not a consumer product with an attached store, like an iPhone... this changed over time.
I won't bother mining all the statements, but Oculus has been rather fippant on these points. Implying or flat out stating something, then when a different set of circumstances pops up, they'll do a 180.
At other times it's just the idealist speech that doesn't materialize, when they sank a ton of money into research and said they'd take the hit to get VR to the masses, when they said that they'd sell the sets for 300-400 USD, then sold it at quite a bit more.
You can't claim to be an open-source kind of company, that's in it for the ideal of VR, that's going to sell at cost or loss and then become Facebook employee that behaves like Apple and expect people to not be annoyed. The PR hit is deserved, so are the DRM circumventions. They could have made money of the software sales in Oculus Home, regardless of the headset, instead they opted to accelerate the existence of piracy in VR... piracy at this stage is dangerous because it's easy, games are expensive, experiences are short and hard to justify sinking lots of money in them and developers need the cash for us to get to truly great games/software.
Piracy would become an issue anyway, but Oculus has precipitated it and given it visibility before the market had a chance to develop more robustly and take the hit. This will be a costly error for the entire VR industry and give developers even more pause in developing for it.