I think there are multiple problems when it comes to overturning a culture of piracy. I don't presume to know what the situation is like in some of these other countries, I can only speak from personal experience watching things change as I grew up here in Singapore.
While preventing piracy itself is important, I think destroying the public mindset that piracy is acceptable and something the government and authorities close an eye to is more important. And I don't mean internet piracy, but the physical presence of shops selling bootleg material openly and being totally casual about it, only getting raided rarely in enforcement actions meant only for show. Why is this so important? Because that is the face of a country, the public perception. Once that perception has been altered, it will make it more palatable for foreign companies in that industry to even want to invest in that territory.
And the investment is what matters. You want companies to directly deal in a country, having official local distribution lines and even doing as much manufacturing locally as possible (even if it's just cases and covers for packaging). These things go a long way in making legal legit products accessible to the general public and more affordable. Although how much more affordable will depend largely on the spending power of the audience in that country. I wouldn't say that prices here for games have fallen that much, although if we take inflation into account, maybe? In the past when everything was pirated, I would pay maybe 80-100+ bucks for a Japanese game, 70-80 bucks for a US game. Today the Asian version of a Japanese game costs about 70-80 bucks, US games or English Asian games cost 60-70 bucks, and import Japanese games still cost 80-100 bucks lol. So instead of prices directly dropping, I guess it's more that there are just way more options because of the investments I mentioned.
Piracy and legit distribution for videogames in developing economies is a very interesting topic, but it's hard to have that discussion on this forum a lot of the times because I think people who grew up their entire lives in full developed economies have a very black and white view on copyright, piracy, and pricing, which simply can't apply in parts of the world. Often the solution is not to blame the pirates, but rather look to the cause of the piracy mentality, and work to shift that positively, while pushing to introduce legal alternatives.
