First mover advantage tends to be a curse for modern tech. Of the giant tech companies, only Apple can claim to be a first mover -- they all took the crown from someone else.
Apple was a first mover many decades ago, but they lost so much ground around the lat 90s early 2000s, that they might as well be a late mover after that.
I use Grok myself but talk about ChatGPT is my blog articles when I write something related to LLM.