Why did Harvey choose a top-down enterprise GTM while Cursor went bottom-up?

I heard people describe Harvey as the cursor for lawyers. i never used it myself but i imagine it brings AI directly to where lawyers work to read, write and edit docx files similar to what Cursor does to code / text files in VSCode?

It seems like their product isn't like Cursor where you can just download and play. I also heard people say its hard to book a demo with Harvey if you're not a big law firm.

Why is this the case?

Was this a capability/cost constraint on LLM models around 2023? Which means today's startup can make a different set of choices? Does big law firms operate in a way that are completely different? Or is this founder's preference?