[acdha]

I think your analysis is correct, and would also add that corporate projects probably have both the culture of monitoring (they use it for everything else) and the expectation that they have to deadlines so they prioritize the idea of being able to ship something with the confidence that it either won't break anyone or they'll be able to know & react quickly if it does. Open source didn't used to have that same focus since it was rarely someone's job and there was more understanding that time was in short supply (“if it breaks, let me know or send a patch”).

[arp242]

It probably also helps there's more easy access to infrastructure for all of this: servers and sysadmins. Ignoring everything else, that's much harder for your more classic volunteer effort open source project: servers cost money, and maintaining them costs time (usually better spent on actually writing code and such).