Here's the issue:
Doing business on a national level in the US vs doing it in any other country.
You just can't compare how big the US economy is VS your country, no matter where you're from.
Expressions like riches are in the niches only apply to the US.
They don't apply to any other place.
You often hear of a small business doing $5M a year while operating in a super small niche industry.
That just doesn't apply anywhere else.
The most money you can make with a traditional small business outside of the US will never exceed $2M a year and that is the maximum.
You can expand it, which will turn it into a franchise or something bigger than a small business.
My point is, don't be tempted to recreate something in your home country until you know what it takes and how far you can take into
And most importantly, if it's worth it at all.