In terms of the larger market, I have no idea. However, I avoid SaaS things, and I won't go for software "subscriptions", so unless your product offers the ability to pay a single fee and run it on my own machines, I wouldn't be your customer.
It doesn’t change the fact that software is expensive to maintain and even relatively simple apps can cost millions of dollars in human-hours to support. SaaS is the safest path to that, and if users don’t want to pay a premium (>$200ish, in my case) for offline, SaaS will stay that way.
I gladly pay $129 a year for 5 users of MS office and each user can use the software on multiple platforms and have 1TB of storage