Nothing, so long as it is profitable for the company that owns it, and apparently they were not. If the federal government or province wanted to railbank it/them for future passenger use (because it seems they were determined to have no freight value), I suppose they could have either bought it/them or paid the companies to keep it/them. There are a number of abandoned ROWs in the province that, in today's context, could be argued have a current or future public benefit, but unless we are willing to nationalize our railways, those decisions were based on economic viability for the owners.