Progress Of Indic Languages Vs English

[ramana]

While growing up I spent a lot of time from ist standard to 11th standard learning Hindi-the national language. Only after graduating from college and living in US and interacting with people from UP and Bihar I came to know that the Hindi I learnt in school was a corrupt version Khadi Bholi that has a mixture of Urdu words written in Devnagari script and that there are two other dialects-Bhojpuri and Maithili that do not have the admixture of Urdu/wurdu. I have mixed feelings and feel quite let down that this was rammed down our unsuspecting minds as a way of syncretization.
What could happen in two three hundred years when the population decides to switch to these dialects and leave the official language high and dry? Will the speakers be the non_Hindi belt dwellers who were brought up on this official dialect?