Lower employee cost…
Seriously though, people who can do good R&D are not cheap (rightfully so IMO) and they often spend thousands of hours before anything they do can be monetised and start earning a company money. It’s a big expense that a company need to be able to absorb for an unknown amount of time and without any guarantees that the current direction pans out into something profitable.
Depending on the industry, regulatory requirements are also expensive to fulfill and another barrier to slow things down and increase the required man hours to reach a finished product.
They should’ve thought of that before they stopped having children. /s