Because Microsoft managed to sell it to a huge number of companies, not directly because people are using it. Hardly anyone is paying for Grok.

US government is paying for Grok to help it send bombs on Iranians. That's a use case.

with this thinking I wish that all your products are as successful as copilot is ;-)

A bad product can be successful with the right distribution. This is what happens with Grok and Copilot.