Some are more interested in the game mechanics that lead to higher levels, higher ranks, and GC awards, none of which have much to do with a business simulation.
Nor is it a business simulation to use a CEO to bail out an empire.
As noted, the purpose of market value is to get cash. Either from selling a whole corp, or from selling shares of a corp.
Share trading leads to cash.
Commodities trading leads to cash.
All roads in business lead to cash. Cash is king in the real world. But not for most in Simcountry.