[macspoofing]

>Supporting something is infinitely times easier than building it

No it isn't. That is patently untrue. I've had to deal with in-house solutions many times in my careers. Inevitably what happens is the original author leaves the company or just doesn't want to support it and whatever tool they built atrophies and we end up moving to an off-the-shelf product with a lot of pain.

I'm dealing with a homegrown project management tool like that now. Originally built 10-15 years ago - it now has a feature request list a mile long. Finance is annoyed they can't pull the kinds of reports they want, and that it doesn't integrate into our CRM. IT is annoyed it doesn't support SAML and they have to manage backups. The tool is running on whatever the hot stack was at that time - so it is horribly out of date now ... but the original people that wrote it have long since left the company. The engineers don't want to touch it. Product doesn't want engineers to work on it because it takes away from our core business.

There are commercial off-the-shelf tools that provide the same feature-set (+more) and don't tie up my engineers, but now the thing is engrained into workflow and moving off of it is a major project spamming multiple departments (including engineering).