What does 30 over 30 mean?
Aren't the accomplishments of a 70-year-old entrepreneur every bit as meaningful, every bit as newsworthy, as the accomplishments of a 30-year-old entrepreneur? Of course they are. That's why I'd like to make the phrase "70 over 70" just as -- just as commonplace as the phrase "30 under 30."

What does 30 under 30 mean? And what does 70 over 70 mean? Thank you.

Question

What does 30 over 30 mean?
Aren't the accomplishments of a 70-year-old entrepreneur every bit as meaningful, every bit as newsworthy, as the accomplishments of a 30-year-old entrepreneur? Of course they are. That's why I'd like to make the phrase "70 over 70" just as -- just as commonplace as the phrase "30 under 30."

What does 30 under 30 mean? And what does 70 over 70 mean? Thank you.

Answer

30 under 30: Looks like Forbes publishes a list of 30 people under 30 years of age who exhibit excellence in their field.
For example, here is a list for "30 under 30" in art and style: https://www.forbes.com/30-under-30/2018/art-style/#5bf90c3234c6.

The author is suggesting that there are people over 30 years old who also have a lot to offer the world, and that if there were a list of 70 people under 70 a lot of other people excellent in their fields / entrpreneurs etc. would get the attention they deserve.