You say this like you can just talk with the VP and CFO and have a nuts and bolts conversation about big systems things as an pre-hire IC. You can't negotiate with even medium-sized companies at that level. They have a fixed idea of what the 'role' looks like, and almost always it's full-time, long-term. You can negotiate maybe 10-25% salary increase, but that's it. Good luck even getting more PTO (the "standard" amount is always "generous" and if you got more it would complicate "team dynamics").
I wanted to explain from a purely economic perspective why if you want a consulting role instead of a full-time job, you will likely be paid much less.
Consulting often pays way more than salaries every do.
In the same way that driving Uber pays more than driving for a taxi company: Not as much when you factor in your own expenses (taxes, insurance, etc) and non-billable work.
Uber doesn't pay more than a job as a taxi driver as far as I know (take home).
The take home pay after carrying more expenses probably makes it worse.
Uber sells demand for transport. They don't own the transport and the burden of owning, and maintaining the transport is pushed on to freelancers, who have less certainty of income than they would as employees might.
Theres been lots written about the insecurity to employment that is created by more things offering gig jobs on one hand but not always ending up also offering part time or full time positions.
From the customers side, apps like Uber provide a sense of certainty (visual map) that existing industries haven't been willing to invest the same kind of capital into and those apps as a result are not comparable or inviting.