I really doubt it. However, not necessarily because the software is bad but because of it's exclusivity.
Lets look at some facts and some Apple history.
5% market share: To nobody's surprise.
Apple's OSX has the weakest market share aside from linux and Other. Even falling way behind it's own IOS.
No Windows & No Intel: Not only is not going to be ported to Windows but if the rumors of Apple abandoning Intel are true (It's seeming to be less of a rummor). It's going to need to be re-written from the ground up all over again meaning there's going to be a gap in time before anyone will be able to use it on any system. If the rumors are not true. 5% of the PC market is still not enough to take on the titan Adobe.
If anything cross-platform FOSS software has a better chance of taking on Adobe than Sketch.
Final thoughts and considerations as to why:
Apple's past: As someone who has experienced the shift of Apple choosing IBM then Intel. The transition was NOT as smooth as Apple advertised/reported.
Apple's present: Apple does not care about making workstation computers anymore. In fact they are no longer in the business of making workstations. The last MacPro (lovingly named the Trashintosh because of it's shape) became obsolete frighteningly quick due to its inability to upgrade graphics cards compared to their previous MacPro line. Apple has admitted they didn't care about it's high end machines and apologized.
Apple's Future: It's obvious now their main source of profit is phones and they are mostly a smartphone company. They're workstation machines are nothing more than an afterthought. And moving from Intel will not be easy for Apple or software developers. More workstation Apple users and businesses are flocking to Windows than ever before because apple is for lack of a better words screwing over it's workstation users.
This is not an Apple rant:
It's important to focus on Apple because Sketch is only on Apple. Historically we can compare what would happen if Video Toaster aka Lightwave3D stayed exclusive to the Amiga. It was cheap, ahead of its time, and successfully taking on the other 3D software giants of its time. However the software did eventually move to other platforms and managed to live many many years longer than the Amiga did.
Future of Sketch: If Sketch will inevitably have to re-write their code for the new OSX chipset. If they chose to write cross-platform this time then I believe Sketch will have a better chance of taking on Adobe.
Anyway, I wish Apple and Sketch the best of luck during this unsure transition period. There's no way to know for sure what will happen until we see what 2021 brings us.
That being said Affinity Designer is already ported to Windows and looks very promising. Keep your eyes on it.
I think my perspective on hardware is not what everyone is expecting in an answer but still important to consider.
Scott's answer from a few years ago can give you much better insight of how the industry can look down on you for not using Adobe. I'd say he's right on point and still applies today