Entirely possible. I don’t use Macs and am not an expert on them. I am going off the explanations of why they did not include Mac for OW. There are others here who can explain it far better than I can.
“It was a result of not having all the technological support we needed to make the game viable on Mac systems.” says Kaplan, referring to Apple’s policies with OSX. “We have a real love and dedication for Mac players, they’ve been extremely loyal to us and we love giving them Blizzard games.
“But when dealing with the PC, the Xbox One and the PS4 - all of which are extremely welcoming to the technological needs to run a next-generation shooter - in a lot of ways we felt left behind, that we weren’t given the support we needed to make a great product on the Mac.”
-PCGamesN
Kaplan acknowledged Blizzard’s longstanding support for the Mac, but said there are technical challenges surrounding a OS X version.
“Currently with the technology behind Macs and the way Overwatch runs it’s just too challenging for us at this point to support it,” Kaplan said. “Our focus right now is entirely on PC, Xbox One and PlayStation 4.”
TL;DR: Mac / Apple hasn’t given the Blizzard the components & support they need to release Overwatch for those devices, at least yet.
“It was a result of not having all the technological support we needed to make the game viable on Mac systems.” says Kaplan, referring to Apple’s policies with OSX. “We have a real love and dedication for Mac players, they’ve been extremely loyal to us and we love giving them Blizzard games.
“But when dealing with the PC, the Xbox One and the PS4 - all of which are extremely welcoming to the technological needs to run a next-generation shooter - in a lot of ways we felt left behind, that we weren’t given the support we needed to make a great product on the Mac.”
-PCGamesN
Kaplan acknowledged Blizzard’s longstanding support for the Mac, but said there are technical challenges surrounding a OS X version.
“Currently with the technology behind Macs and the way Overwatch runs it’s just too challenging for us at this point to support it,” Kaplan said. “Our focus right now is entirely on PC, Xbox One and PlayStation 4.”
As of 2019 Jeff Kaplan still says it is a Tech limitation with the Apple platform, not OW.