> Sales people tend to be more sticky to their preferred SaaS products than engineers.

Maybe sales get to choose their (SaaS) tools while engineers are forced into it by the sales department to a greater extent?

At my last gig Perforce was changed to Gitlab to "save money". Gitlab didn't work too well the legacy mess of 100s of scripts and 1000s of release branches so we got stuck with both. A really industry specific tool was deprecated by IT to save money with a cheaper replacement that did something else, that ofcourse didn't work out so we got stuck with both.

Etc.