What the company or idea is
Rolls-Royce Limited was a British engineering company founded in 1904, incorporated in 1906, that began building luxury motor cars and pivoted decisively to aero-engine manufacturing during the First World War.
How it actually makes money
Rolls-Royce Limited made money from manufacturing luxury cars (1904–1971) and, increasingly after 1914, aero-engines — first piston, then jet — for military and civil aviation. It also sold diesel engines, marine and industrial turbines, and nuclear submarine equipment.
What works
Its pivot to aero-engines worked: aircraft engines became its principal product after 1914. Jet engine development — begun jointly in 1940 and entering production in 1944 — established long-term technical leadership in propulsion.
What does not
Its business model failed to contain cost overruns on the RB211 programme. The owners were obliged to liquidate in 1971. The car division was financially insignificant by then and divested.
What to take from it
A reputation for superior engineering does not insulate a company from financial collapse when its core product becomes too complex, too expensive, and too dependent on government contracts without adequate cost controls.
Is it worth your time
Yes — as a case study in how engineering rigour can become a commercial liability when misaligned with financial discipline, procurement reality, or state-backed risk tolerance.