Well Xbox one had no games only BC and sold +50 million.....While at the same time PS5 with BC has recently is the fastest selling console outperforming consoles like PS4/Switch who had no BC. Researchers will always say it is not important =p....but right now 90% of the games played on Next gen consoles are BC games.
BC games don't get any marketing or barely but are important. That's why publishers take (candidate)BC games like the Mass Effect games and just pimp them up a little
and with the right amount of marketing make it potentially one of the biggest releases of the year...








