The federal power sharing in India has become more effective over time for a few reasons:
The Indian judiciary has played a significant role in interpreting the Constitution and ensuring that the federal structure is maintained. The judiciary has given several landmark judgments, which have helped to define the limits of the powers of the central and state governments.
The Indian Constitution has been amended several times over the years to address the changing needs of the country. These amendments have helped to clarify the distribution of powers between the center and the states and have led to a more effective federal power sharing system.
The center and the states have also developed several intergovernmental mechanisms, such as the Inter-State Council and the National Development Council, which have helped to improve coordination between the center and the states.
Over the years, the center and states have also developed several cooperative arrangements, such as the National Policy on Centre-State Relations, which have helped to promote greater cooperation and coordination between the center and the states.
The center and the states have also developed a number of institutions that have helped to facilitate the functioning of the federal system, such as the Finance Commission, which is responsible for the distribution of financial resources between the center and the states.
All these factors together have contributed to the federal power sharing becoming more effective in India than in early years after the Constitution came into force.