Earlier quoted context omitted.
This assumes the product can still be purchased or is for sale in the country. Not every country has a licence to sell certain movies. Literally can't pay the money the makers of the films what they want to charge me because they don't want to charge me . This also applies to music and other products (though other products can't necessarily be pirated). My options are: a) Pirate the movie at no cost to the creator b)…
c) Watch another movie, paying its creator (possibly the same as in option a) If the minority's of people do that, the shared culture is going to stay, but it will ignore the movie of options a) and b), and include that of option c).
You can't just replace "Vocaloid Music" (Miku, Rin, Luka) with "other synthetic vocals". It's "similar" but it is not "the same".
The cultures around Gumi and other Megpoids differs from that around Miku and other Vocaloids.