Also not an investor, but intuitively reinvesting revenue to grow future revenues seems more valuable than being profitable without taking steps to (substantially) grow revenues. Can anyone to speak whether this intuition is reasonable or not?

Exactly. Profits lead to dividends, but also to taxes. As an investor, it is preferable to reinvest and keep growing the business. The trick is that mature companies have a very difficult time achieving double digit growth. Amazon (still) doesn't have that problem.