It's not really that black and white. The production of new software would be capitalized, just like the production of basically any other product. Resources/developer time spent on maintence would be deducted immediately, however.
And... if you have to write down an intangible asset you can... and that will reduce taxes accordingly. You can also get loans for intangible assets, use them as collateral, etc. I don't understand what you're saying about not producing software on credit-- of course you can produce it on credit like anything else. You can hire out a firm. Even if you hire a w2 dev you typically have 2 weeks to pay them for work done.
And... if you have to write down an intangible asset you can... and that will reduce taxes accordingly. You can also get loans for intangible assets, use them as collateral, etc. I don't understand what you're saying about not producing software on credit-- of course you can produce it on credit like anything else. You can hire out a firm. Even if you hire a w2 dev you typically have 2 weeks to pay them for work done.