Why does lawn care still start with “what treatment do you want?” instead of “what's wrong with the lawn?

I've been working on a lawn company in Missouri called Dadlawn, and the more I get into the industry, the more this bothers me.

A lawn can look terrible for a dozen different reasons.

Soil compaction.
Poor irrigation.
Drainage.
Shade.
Wrong turf.
Disease.
Nutrients.
Mowing practices.
Pests.
Or some combination of all of them.

But a lot of lawn care seems to start with picking a service:

“Need fertilizer?”
“Need weed control?”
“Need aeration?”
“Need overseeding?”

Then everyone goes home.

We're trying to build Dadlawn around the opposite approach:

Diagnose → prioritize → execute → measure.

If irrigation is the problem, fix that before dumping more product on the grass.

If the soil is the problem, address the soil.

If the turf itself isn't appropriate for the property, that's a different conversation. And if the lawn actually just needs a normal treatment, great — do that.

I'm curious what people who actually work in lawn care think. Is the industry too service-driven instead of diagnosis-driven? Or is there a good reason this is the way it is that I'm missing? I'd genuinely like to hear from people who have been doing this longer than I have.