Comment by chermi
You're right. I was focused on the idea that for software to be taxed as a capital investment there had to be a time when it was considered a finished product. Like building a tractor. I guess the analogy then is how the tractor builder is taxed when fulfilling warranties. I suppose tractor business can expense as R&D work that goes into processes that make it easier to fulfill warranties.
Each version of the software is a finished product just as any particular tractor is a finished product. The difference is that I know plenty of physical assets that companies buy which see no changes other than maintenance over their entire lifetime. I don't know of a single piece of software produced which receives only bug fixes.
Yeah devs spend their time fixing bugs, but a large percentage of those bugs are the result of the software needing to work under new conditions or with new version of dependencies.
That fundamentally different than a tractor breaking down from wear and tear while doing the exact same thing it's always done.