Startups usually do most of the r&d now, and once it gets to small/mid level and "the process" comes in, the bizdevs take over after it is usually already an established product and r&d mostly completed. Depending on the balance of that takeover it either kills the product, slowly bleeds it, or if the focus is still on product then sometimes a super growth engine.
Companies that can keep a focus on r&d, building and changing markets while being very efficient are key. Usually these are engineer led (Amazon, Tesla, Google etc)