Sounds like perverse incentives? If your best coarse is to ruin your company and product to make a buck, you may as well be a telemarketing scammer or some other vulture of society that make bank off the mystery/rent seeking of others.
I have to hope that the original owners really wanted to make the best product possible and lost their heads with the power to create that they thought the investments would bring.
Theoretically it aligns the incentives of the founders with those of the VCs putting new money into the round (eg the founders are OK with the company taking more risk, because they have diversified their personal net worth somewhat). Now, the incentives of the VCs putting new money into the round, there's certainly an argument that they don't always benefit society or deliver the best possible product...
I have to hope that the original owners really wanted to make the best product possible and lost their heads with the power to create that they thought the investments would bring.