The answer is “NO”. The cost of the installation of elevators and ramps on every access point on every station account for just about 1% of the whole project’s cost.
To say, no matter the cost, this is a thing that needs to be done. There is no excuse of not doing that and even the law has regulated this clearly since 13 years ago. Importantly, given this emphasis, the Prime Minister has stated firmly that “We won’t leave anyone behind.”