ime, for many companies, standard, off-the-shelf tooling that's a mix of OSS and paid services works great. And one benefit is that when you leave, you can brin

ime, for many companies, standard, off-the-shelf tooling that's a mix of OSS and paid services works great. And one benefit is that when you leave, you can bring whatever tools you loved into the next company. The reason Facebook and Google built their own is that they're at such a huge scale both in terms of usage and number of engineers, that none of the off-the-shelf things work for them. For most companies that's not the case.