That's right, market capitalization by itself doesn't say anything at all. Let's take for example such assets as Ripple, Bitcoin Cash or Tron. Being large, in terms of capitalization, projects, they can hardly be called an effective investment of your funds (unless, of course, you are an early investor). These projects stopped growing in 2018 and since then have continued to stagnate, not even close to half of their former ATH for a long time.