I generally agree, but I'd say it depends. I'm not too surprised that software developers are less likely to spend money on software - they do have another option non-programmers don't have. I'd also not be shocked to hear that trained accountants starting a company are less likely to hire accounting firms than non-accountants.
And most software I deal with isn't exactly free of opportunity cost - I dabbled a bit with accounting tools to the point of frustration and time sunk that I decided to roll my own (built around ledger, in case anyone cares) in about a day. Writing my own tool is sometimes faster for me than trying to figure out how to use one that's not designed around my specific needs.
Sure, 10$ doesn't seem like much, but all these little invoices can creep up to a non-trivial sum.
Yes, but shouldn't I be making more even money by using these services to optimize those other things? If, say, Calendly helps me get booked for appointments, appointments that wouldn't have happened without that app, then isn't that spending money to make money?
If you think so, it's probably true. That's why I can't really disagree with parent :D
I find the cost and value of tooling options quite difficult to fully grasp, it often comes down to gut feeling IMO.
What I would want to caution folks for is that the cost of a tool is not only what it actually costs. It's also the amount of time that has to be invested into usage, and potentially migrating to something else a while down the line in case of discontinuation, disappearing capabilities, new requirements, ToS or pricing changes, ...
And most software I deal with isn't exactly free of opportunity cost - I dabbled a bit with accounting tools to the point of frustration and time sunk that I decided to roll my own (built around ledger, in case anyone cares) in about a day. Writing my own tool is sometimes faster for me than trying to figure out how to use one that's not designed around my specific needs.
Sure, 10$ doesn't seem like much, but all these little invoices can creep up to a non-trivial sum.