I don't think it's a matter of laziness. More so where is it best to spend your expensive/valuable developer resources, on the product or some home-baked analytic's framework?
I applaud SpiderOak, but they are much different from most other sites. They have privacy conscious customers to begin with, this is something that is good press for them and probably a net positive on their bottom line for doing it, not the case with most other sites. Also it's something they are doing after having a very mature product for many years, clearly not the first or most important thing they needed to tackle as a company.
Agreed - for some cases just pasting the GA snippet onto a site is sufficient. For others you should add events and such. For others you must roll your own.
I applaud SpiderOak, but they are much different from most other sites. They have privacy conscious customers to begin with, this is something that is good press for them and probably a net positive on their bottom line for doing it, not the case with most other sites. Also it's something they are doing after having a very mature product for many years, clearly not the first or most important thing they needed to tackle as a company.