There is an impression that private companies built railways under a guarantee system and this later changed to government ownership and operation of railways. The truth is messier. Towards the close of the 19th century, there were 10 different systems in simultaneous existence: (1) Lines constructed, owned and operated by private companies under old contracts and guarantees; (2) Lines constructed, owned and operated by private companies under new contracts and guarantees; (3) Lines constructed, owned and operated by the government of India; (4) Lines owned by the government of India, but constructed and operated by private companies; (5) Lines constructed and operated by private companies, without a guarantee, but with some kind of government assistance; (6) Lines owned and operated by princely states; (7) Lines owned by princely states, but operated by the government; (8) Lines owned by princely states, but operated by private companies; (9) District Board lines, short local lines within a district, financed through a local cess; and (10) Lines in foreign (French or Portuguese territory). The Acworth Committee listed five systems, since several were clubbed together as miscellaneous.
Though the EIRC was formed in 1845, it signed a contract with the East India Company in 1849, amended again in 1854. This contract was under the old guarantee system, before it was tweaked through the new guarantee system. Leases were for 99 years, but after 25 years the government (East India Company and later government of India) had the option of purchasing everything (including rolling stock, plant and machinery) back. This is what the 1854 contract provided for, though not the 1849 one. Counting from 1854, this led to the East India Railway Company Purchase Act of 1879, a statute for nationalisation. However, though ownership changed, the EIRC was allowed the franchise to operate the railway for 50 years. The EIRC's status changed from (1) to (4) and this was to be reviewed in 1919. (It was 1919, because the franchise agreement was in 1869.)
Most people who work for the IR will quote you the following from the Acworth Committee Report. The Nehru Memorial Museum and Library is probably one of the rare places where all volumes of the Acworth Committee Report are available. In this set, a specific section has been marked out in pencil. Subconsciously, everyone probably feels the urge to quote this. "We do not think that the Indian railways can be modernised, improved and enlarged, so us to give to India the service of which it is in crying need at the moment, nor that the railways can yield to the Indian public the financial return which they are entitled to expect from so valuable a property, until the whole financial methods are radically reformed. And the essence of this reform is contained in two things: (1) the complete separation of the Railway Budget from the general Budget of the country, and its reconstruction in a form that frees a great commercial business from the trammels of a system, which assumes that the concern goes out of business on March 1 every year and recommences de novo on April 1; and (2) the emancipation of the railway management from the control of the Finance Department." While that's fine, the Acworth Committee itself said it had 24 unanimous recommendations and another 26 divergent/supplementary recommendations. For example, "we suggest that there should be a less rigid regard than hitherto to the claims of seniority". Or, adherence to commercial accounting principles. Out of the recommendations that still remain relevant, only one was really implemented, the idea of a separate Railway Budget. And that's the one we continue to persist with.
The writer is a member of the National Institution for Transforming India Aayog. The views are personal