If 3 years ago the tech was available then how come the Neuralink patients never got that? I'm sure they'd be the first to sign up.
Distribution is part of innovation. Brain computer interfaces exist but those who would be willing to undergo the procedure to get them don't have that option, then an inefficiency exists in the market that can be filled by a competitor. Musk's companies play on the same field as everyone else, but they continue to win because operating efficiency, mind-share and tactics are all part of the game, and he is the best at winning it in many domains.
Edit: I understand the ethical considerations of such a nascent technology. I just feel that we live in a world where miracles exist that could help thousands of lives, but they move too slowly to help those lives. How long are paralyzed people waiting for a cheap way to have some more agency in the world? Is the only way to reach it being available sooner doing unscrupulous things that buck safety requirements?