Found

Work that builds the thing that employs other people.

Home Care Operator
mixed · $60k–$180k · 4y to competence · licence required
Builds and staffs a home care service for ageing clients. Care quality and scheduling logistics are the same problem.
Service Business Founder
mixed · $60k–$250k · 6y to competence · no licence
Builds a local business around a trade or service and hires into it. Ownership converts practised skill into an asset.
Software Founder
desk · no floor–$300k · 6y to competence · no licence
Builds and sells a software product, usually small before it is large. Highest leverage and highest failure rate together.