It's much smaller. It's not quite artisinal anymore, but it's not where the mass-produced jeans the world prefers come from. It's where the high-quality $300-a-pair jeans come from.
It's alive and well! But in size and scale, it won't compete with US/China just because of the fact that most people don't care about the quality of their jeans. Like most things, the premium market is much smaller than the "good enough" market. The top brand names for raw denim enthusiasts are still chiefly Japanese companies.
I've bought 5 pairs of Japanese denim from 5 different manufacturers over the past 7 years. If anyone has questions about raw denim, feel free to leave a comment or send me a message.