I've worked in place where the majority of projects and the majority of code went in to maintenance. There could be several months or even a year or two of inte

I've worked in place where the majority of projects and the majority of code went in to maintenance. There could be several months or even a year or two of intensive development, with teams reaching a dozen or more developers + QA, DBA, PMs, Ops and a bunch of people on the client side. And then those projects passed UAT, then went on production, a round of change requests and the teams were disbanded, with maybe a single developer giving some of their time to fix a bug. Sometimes such project went many months or even a few years with no development time spent on them. Some had backlogs of bugs, but it was very hard to mobilize resources to fix them. The company was chasing new project that were bringing more money, so after delivery the old projects had huge opportunity costs, even if there were maintenance fees.