Sadly it is not, certainly if you do work for other companies, as they expect files in Adobe file formats. A friend have been doing graphics design for years using Adobe software and most of the companies she did work for wanted he to do the work in Adobe software, be that Photoshop, illustrator, InDesign or other Adobe stuff.
A few months ago she decided a slow-down a bit and have gone for smaller clients and now use the Serif affinity software. But some of them still asks if she uses Adobe. I think her susbscription for Adobe stuff comes to the end in August and she is not going to renew it.
The problem is now is that Affinity has been taken over by Canva, which is little worrying.
There really is not a lot of competition for Adobe out there, Video editing yes maybe and Audio yes, but graphics wise, nope. Desktop publishing therer is very little out there either. You have Affinity publisher, quarkexpress if you can afford it, Xara page and layout something or other, not really a true desktop publisher. Scribus if you want to go open-source.
MS have decided to stop producing their desktop publisher.