This is incorrect, you completely left out DeFi and yield farming. This is a big deal because most people can make more money farming on a platform like Ubeswap or Ref Finance than they ever will trading or gambling.
The choice of earning option depends on the level of income that you plan to receive. The option you proposed, roughly speaking, provides passive income, which can also carry significant risks, for reasons beyond our control. And someone wants active trading, where the opportunity to earn is higher and control over assets is directly yours.