"Your boss bases his views on what he knows of the industry and that's reasonable. However it doesn't necessarily justify inaction in trying to find alternatives so I can applaud your efforts, though it does illustrate (pun not intended) the way that product lock-in works."
But lock-in it will remain until someone else can go one better AND still support the industry standard. That's one reason the likes of Microsoft Office and Adobe Creative Suite/Cloud still stand strong: because they've cornered their respective markets and can therefore dictate terms. It may be ugly, but it's also the natural result of winning the favor of an industry. The upstart has to RIDE institutional momentum if it wants to have any chance to STEER people away from it.
So to take an example, if GIMP wants to draw converts from the world of Photoshop, they need to at least support import/export of the de-facto-standard PSD format. Similarly, LibreOffice, like it or not, needs to be able to cleanly import and export OOXML documents AND included scripting if it wants to bridge the standards gap.