Nvidia’s moat will be tested by a potential AI chip IPO

• Nvidia’s software is what makes its products so sticky in the white-hot market for AI chips. 
• An investor in rival chipmaker Cerebr as says 10% of the market is up for grabs.
• Cerebras is reportedly headed toward IPO at the end of this year. 

How wide is Nvidia’s moat? This is the $3 trillion question on the minds of investors these days. At least part of the answer could come in the form of an IPO later this year.