This is somewhat similar to what the Metropolitan line did in the first third of the 20th century -- https://en.wikipedia.org/wiki/Metro-land https://en.wikiped

This is somewhat similar to what the Metropolitan line did in the first third of the 20th century -- https://en.wikipedia.org/wiki/Metro-land https://en.wikipedia.org/wiki/Metro-land -- though in that case I think they mostly sold off houses and building plots on the estates to gain an immediate capital return on the increased land value, rather than retaining the land and collecting rents.