I mean there are different definitions on what to call an AGI. Most of the time people don't specify which one they use.

For me an AGI would mean truly at least human level as in "this clearly has a consciousness paired with knowledge", a.k.a. a person. In that case, what do the investors expect? Some sort of slave market of virtual people to exploit?

Investors don't use this definition. For one because it contains something you cannot measure yet: consciousness.

How to find out if something has probably consciousness? Much less clearly? What is consciousness?

Being able to make arbitrary duplicates of slaves would be profitable, as long as the energy and compute is lower than salaries yeah