Steam (almost[1]) nails the malware-free part, but people's drive to make it open to all and not fully curated (to remove AAA biases) also led to it becoming full of shovelware and "baby's first game" products. Conversely, Epic Games Store is doing the complete opposite with a heavily-curated store and a tightly-controlled catalog.

[1] https://www.digitaltrends.com/gaming/steam-game-allegedly-mi...