Well, that's obviously because the people using the software aren't the customers. The customers are the ones signing the checks.

I actually think it's the right approach for a tech business - your main landing pages should market towards the buyers and then you can have more technical documentation pages for the users. As an example from your comment: https://tailscale.com/kb/1151/what-is-tailscale

Yes, I understand why they do it, and I assume that doing it that way is the "right approach" for them, for the capitalistic reasons that you specified. It just makes me sad that the amazing capabilities of the web are being squandered and marketing fluff, when that same page real estate could be used to educate and enlighten.