Alphabet's earnings show investors are impatient for the data on AI returns. No one has the answer yet.

In Tuesday's earnings call, investors repeatedly asked Alphabet executives for data about the rate of return on AI projects but received little information in response.

Beck Diefenbach/Reuters

• Google's parent company, Alphabet, had its earnings call on Tuesday, reporting mixed results.
• During the call, investors repeatedly pressed execs for data on the rate of return for AI projects.
• Despite several questions, Alphabet's leadership had limited information to share.

In Tuesday's earnings call...