That sales pitch has been resurrected, dusted off and retold far too many times to EVER be believable again.
...at least for me.
Microsoft: "All your old DOS application will integrate seamlessly with Windows 3.1!"
IBM: "All your old Windows applications will integrate seamlessly with OS/2!"
Linux: "All your current Windows applications will integrate seamlessly using Wine!"
(Yes, there's some exaggeration in there, but the pitch is essentially the same...)
I ran OS/2 for a while at home. It really was a better Windows than Windows. Back at that time I was on AOL (among other providers), and the little SNERTS as we called them, would try and IM bomb people. The pure Windows platform would choke and die, requiring a reboot. The OS/2 platform took it all in while I IM'd them back, mocking them and laughing at their impotence. :-))
After a while they got the message and never bothered me again. LOL