Because there are little to no positions to fill. Little demand for the service means that the supply is high and price is low.so why the fuck isn't everyone doing it? clearly if it takes little to no talent all the teenage kids who need a summer job would be voice acting at the biggest studios wouldn't they? if it takes no talent surely Mel Blanc wouldn't be so famous for voicing so many characters?
hell, why don't the programmers just voice act? why do studios actively go out and search for VA's when it requires 0 talent? surely the programmers and directors voices are PERFECT for outlandish, fantasy characters who require specialized and punchy voices?
It’s really basic shit and easy to understand.
The harder part then is the value. Is it really worth paying more and will the return on the product be greater if more money is spent on a voice actor?
Developers used to do the voice acting and usually it ended up pretty good. The problems started when guilds and unions got involved.