See Post #113
As I stated... You didn't even try to learn the real reasons Puerto Rico isn't a state.
As in specifically, they have never taken the next step to become a state.
This is actually rather well laid out, our country has done it many times in the past 200+ years. First a referendum in the territory (this has been done overwhelmingly several times now).
After that, the Territory has to petition Congress. And in this, we see the first problem, as Puerto Rico has never actually petitioned Congress. What we saw was Congress telling them we want them to become a state and approving the measure. First problem.
Then the third step, Congress approving it and enacting an Act to move forward. Once again, Congress has done that without Puerto Rico requesting it (step 2 as outlined above).
After that comes their submitting an Application, and along with it a proposed State Constitution. That is actually the step they are at now, and as should be obvious, this is entirely in the court of Puerto Rico. Nobody else can submit the application and a draft Constitution other than them. But they have done neither, not even assembled a Constitutional Convention to create a draft document to submit with their application.
After that comes the next steps. Congress reviewing the Application and determining if they meet the criteria (primarily administrative like population, capitol, local legislature, etc) as well as a Constitution that is valid and abides by all other requirements of the US Constitution. After that Congress votes, and upon passage a Joint Resolution is passed to the President for signature.
Of the 8 major steps that need to be taken to become a state, Puerto Rico itself has only done Step 1. The US congress on their own initiative took Step 3, as a nudge for them to get off the fence and take the next step as their own people want. It is entirely up to the local leadership to move things forward. Nobody else can do that for them.
And Guam is in a slightly different position, as once again the majority of the population want Statehood, but the local government is dragging their feet. But as they are a Territory and not a Commonwealth, at this time they have a tad less self-determinization. But just like with Puerto Rico, they have to be the ones to take the next step. Nobody can do that for them. And it is not like they have not had choices, Multiple times the Northern Mariana Islands have proposed merging, but this has been repeatedly rejected by the people of Guam. But they are a step behind Puerto Rico, as while they have held informal polls and ballot measures, they have yet to have it an actual referendum to legally determine what they should do next.
But both of them are still in the same position. It is up to those local government to take the next step, nobody can do it for them.
And it is not even language, as some try to claim. Case in point, the State of New Mexico has it in their State Constitution that they are bi-lingual, and both Spanish and English are legal languages. And while the House wanted to reject it, President Taft twisted a lot of arms to have them pass the proposal.
And like in 1912 and 1958-1959, it would not surprise me if in the end we had two territories becoming states close together. But like in every other case, they have to make the next step.