@stompix

Here are some great results from the Finder.
They carried out surveys throughout 27 countries with 47k peeps. The methodology used is explained in the report. The report states % involvement of the crypto currency user; whether it is bitcoin or other top most coins.

According to the source, different countries have been ranked as per shown in the following image.



Amongst all, India stands at 3rd number, with 30% adopters throughout the nation. From this, 16% contributes to the Bitcoin holder.
If considered by age group, then also India lists in the top column.
Assuming the youngsters are more involved this will pass on to more college students, part time workers very quickly and more peeps could on board the crypto.



There is amazing report which you can read here: Crypto Currency Adoption Rates
*Above images also taken from this report itself.

With the given sample set at least India stands a chance in the top most holder. The 30% of Indian population is definitely very high index. Idk looks to me logical to think India could be one of the largest holder of crypto.