Pressing unfinished games is a trade-off and a lesser evil than instead choosing to distribute games digital only. One alternative would be to delay all launches until multiple months after the game is considered “ready,” but that would likely impact revenue streams in a way that the people making those decisions would never agree to. It would also upset the 80% of the market who buy games digitally - why should their release be delayed?
Would you prefer for physical releases to not be available until 3-6 months after the digital release (and more frequently, for there to be no physical release at all)?