It could be a correlation rather than a causation. Small countries don't have the financial justification to dub movies and they also must rely on english for p

It could be a correlation rather than a causation. Small countries don't have the financial justification to dub movies and they also must rely on english for professional reading material since there are not enough people to justify publication of local language books. They also tend to rely more on other countries for import and export. Therefore people have to know English just to be able to study and communicate. The Spanish market is huge and so are other big influential countries like Japan, Germany or France which is still spoken in many other countries, mainly in Africa. So there is less incentive to learn English because everything is available in the local language. There are other factors like closeness of the language to English(north European countries) and colonialism(the sub continent). The advancement of the Latin American economies makes Spanish a much more viable and influential competition to English so English becomes less necessary. You can even see it in popular culture where Spanish music and tv shows become popular all over the world. As a non Spanish speaker my random vocabulary in this language increased a lot during the last couple of years.