For me I think it is a question of ownership. It is easier to pay for something you actually own. Software already is intangible, but add in modern licensing, app stores, etc and you really do not have any ownership over your software. Even in the case of open source software like signal, Apple could chose to boot them off the app store tomorrow and I would lose my "investment".

There was a time in the 90s/00s where you bought software in a big box, and it came with all sorts of manuals and such. The tangible assets (manual, floppy, box, whatever) along with the licensing agreement made that software much more valuable than the software we use today.