Lots of companies are failing at it nowadays but it's still the overall best scale for the sweet spot of sculpting detail and articulation in figures and reasonably-sized and detailed/playable vehicles and playsets. 6in scale offers a drastic paucity of support for such things especially compared to how much 18th stuff already exists for 18th collectors to use with new stuff. All those reasons are why the scale still sells despite currently being in the rotten spot for a company's economic gain.