I've also had issues with Lidarr not downloading anything - For example, I tried downloading music from the artist NF - which I don't think is a particularly niche artist - but Lidarr didn't download anything. What indexers do you use to download music?
I don't know about where you live, but in Switzerland there are still stores where you can buy computers. In fact, all computers my parents ever bought are from computer stores.
I don't think they have issues with selling enough. This shit is huge among children.