Doing 1 or 2 features at a time to make 1 client happy or win one deal is called consulting. Not that there's anything wrong with consulting: consulting can be

Doing 1 or 2 features at a time to make 1 client happy or win one deal is called consulting. Not that there's anything wrong with consulting: consulting can be quite lucrative and fulfilling but mistaking it for "product" work is responsible for some large X% of small/early startups failing.