Without all the bailouts, the MTA would have failed decades ago and would have had to have been restructured. Because NYC's political priorities have been to conserve past structures and agreements at the expense of the present and the future, you will see performance go down and down to the point to which 1950s performance will look like 1950s science fiction.
I don't think I would expect anything to change until a major accident kills a large number of people in one day. You should expect the people in charge of the system as it exists today to keep getting millions of dollars as service continues to degrade. But the MTA knows this, so they stop the trains constantly when there is any chance of a collision, so you get the slow motion choke for money that you have had for decades.
There's a great option if you are not happy with New York City and its governance: leave! NYC is a machine for fleecing young people who want to move there with heads full of movies and TV and rich foreign potentates with more money than sense. It's not a great place to live if you want to have a comfortable middle class lifestyle. It might have been that 30+ years ago, but not anymore.