The "either help everyone or help no one" mentality helps --> no one.
Also consider that usually a problem has to be solved in your garage before it's solved globally.
Other times the situation is that there are external barriers (such massive fraud, incompatible laws, etc) and issues (such as the market not being developed enough yet, little to no demand, etc) that prevent the local solution getting scaled out to a global solution.
It's annoying when there are countries that have the ability to use it – like NFC is everywhere accepted, but no one has a system that uses it yet – but the US-only solution on HN is presented as "solves all issues, everywhere".
Or, at the point where we are, just put a "US-only" banner at the top. Because that’s the case. Most solutions here could be implemented far more easy in countries across Europe than in the US, but they are implemented in the US, and only the US. Despite demand.
Like Netflix only in 2014 for most of Europe, and then complaining that europeans pirate all the movies.
Also consider that usually a problem has to be solved in your garage before it's solved globally.
Other times the situation is that there are external barriers (such massive fraud, incompatible laws, etc) and issues (such as the market not being developed enough yet, little to no demand, etc) that prevent the local solution getting scaled out to a global solution.