By Chris Kirkham and Ross Kerber Jan 30 (Reuters) - Elon Musk fans and the man himself have long mused about Musk Inc, a merger of companies owned by the world's richest man. But with SpaceX expected to go public later this year, and Tesla facing a challenging transition from human-driven EVs to robotaxis and robots, even ​some proponents of a sprawling Musk conglomerate want to start smaller. Reuters reported on Thursday that SpaceX is close to a deal to buy xAI, a move that would pave the ‌way for Mu ...