Satoshi was wrong about so many things.
like? he said "expect" not that it will be exactly 10 times higher, so it's still a legit prediction
As the creator of Bitcoin. He certainly already knows the potential that Bitcoin has for the future in the world of finance. And we can see that now many people are starting to be interested in and investing in Bitcoin. At least they are interested in the technology that Satoshi created as a solution in the imagined world.