They know the purchasing process will be the same headache regardless of whether the product costs $100/month or $10,000/month.
If the company is large and the tool enables collaboration and time-saving, $10,000 is literally a rounding error for a company with 500+ employees in comparison to the potential value delivered.
When I see B2B Saas companies with pricing plans that top out at $50/month, I want to pull my hair out. They are leaving so much money at the table and simultaneously starving themselves of the revenue needed to grow and build a long-term business.