I think there are multiple $1B+ business opportunities in providing financial services specifically catered to non-W2 employees.
Here’s my rationale and vision:
In traditional financial services, W2 income reigns supreme.
As a bit of history, the use of the Form W-2 was first established by the Current Tax Payment Act of 1943 as part of an effort to withhold income at the source.
The first Form W-2s were issued to employees in 1944.
The W-2 became the primary source of truth for information about an employee's income.
Financial services infrastructure was built around this source of truth.
In particular, loan underwriting—for mortgages or personal loans—became heavily reliant on stable, growing W2 income.