For you, me, us or even world, it is impossible. But for Allah subhanahu wa ta'ala nothing is impossible.
The most remote civilization residing in deserted Arab peninsula turned into a powerful Islamic nation pitting against two super powers - Romans and Persians and defeating them and implementing Islamic laws and spreading Islam and Islamic values, culture and traditions.
Allah subhanahu wa ta'ala. promised to safegaurd Quran and its teachings till the end of time when Quran will be taken back from the world. Fortunately that time has not come yet. So Islam and its values will always exist and will expand. Only that If we do not follow does not mean Quran and its teaching will diminish or vanish, Allah will bless other nations to embrace Islam and its teaching. We are already observing such shifts right in the middle of turmoiled west. Many men and women are converting into Islam and women wearing Hijab.
Yes gradual deterioration in practicing of Islam in society is very much visible.
Why Hazrat Abu Bakr started crying when Hazrat Muhammad salah ali wasallam declared completion of Islam during his final speech? Prophet's companion understood the meaning of completion. First the demise of prophet had come near and other the gradual deterioration in practice of Islam in Islamic society.
You are right, a time will come when true Muslims will move towards inhabited and remote places to freely practice Islam. This was already prophesied by our prophet.
Go and interview the western locals elders, middle aged and young men and women, you will find that they focus to find peace and easiness in life and for that they struggle to get money, once they find some time and money they go to various places for relaxation, eating and drinking and seeking peace and tranquility, but none could find the peace and tranquility. They visit places of religion, Buddhist and Hindu temples, again they find themselves lost. Most of them unable to find the answers of life. Finally, those who got the opportunity to read Quran and listening to some Islamic scholars, finally found their answers and embraced Islam.
Interestingly, this process of conversion into Islam increased due to awareness of western locals through media about Muslims labelled as terrorists.
Finally, the important thing is where you, me and us want to stand with - Allah or the world?
If we stand with Allah, though it look like a difficult option, we will at the end achieve true success but if we choose to be with the world, an easy choice, we will be living in a false mirage and ultimate failure.