In the AI era, is it really easier to start a business alone?

I recently saw Gate founder and CEO Dr. Han give a speech titled “Start Alone” at the Oxford Union, looking back on Gate’s 13 years as a startup and discussing the idea of “Boss + AI.”
As I understand it, “Boss + AI” doesn’t mean AI replaces entrepreneurs. It means one person can use AI to gather information, learn new things, and handle many tasks that used to require collaboration among multiple people—faster. Things that once required hiring people and building a team might now be tested first in a leaner way.
But lower startup costs don’t mean success is any easier. AI can help write proposals, build prototypes, and analyze feedback, but it can’t judge whether users really need the product, take responsibility for the consequences of your decisions, build trust, or foster long-term partnerships.
So I’d rather understand “Start Alone” to mean: take the first step on your own, then find the right people to continue the journey with when the time comes.
If you were starting something from scratch with AI today, what would you do first? What do you think is the most irreplaceable entrepreneurial skill: identifying needs, making sound decisions, or consistent execution?
#Dr.Han牛津辩论社演讲 $GT