Software still has the lowest marginal cost - the distribution cost is basically 0, unlike things like CDs. And unlike a movie or album, the value that can be extracted via software is much higher. There's tons of make-once sell-lots products, but you need factories and supply chains and all that crap, not just a cat6 connection. If you want to serve more customers, you need to buy more CDs. Streaming is better for content distribution, except the content still has limited value created (so limited price) since its often consume-once and has a limited life span - and digital content is basically "tech" even if its not quite SaaS. Tech is what it is because of how easy it is to create, and how much value it generates, and how low the marginal costs are. Nothing physical compares.
I interviewed for a team at that was part of a 100 person org. They generated about $1B for the company by creating a portal to (essentially) sell access to the company's existing data. They said most of what they spent that 100 people on was building integrations into existing b2b enterprise apps so other companies could ingest it easier. The per-person value created (extracted?) at this org is astonishing, especially since most of those 100 people didn't actually add value to the root product, beyond making it easier to use.