All of the armed forces and MOD are procuring weapons in the blind. There is no capability assessment at a strategic level. Due to lack of a Chief of Defense staff, lack of coordinated geographical commands, all this procurement of foreign equipment is just on an ad hoc basis and for counting numbers.
There has to be joint commands established through out the country like it is done in port blair, A&N islands. If that was the case, MoD people would know what is the combined capability of that command instead of army, AF and Navy individually assessing what is the required capability for each of their forces.
If that was there then things would have been different. For eg. why would IAF look out for the interdiction capability if it already exists with Navy in that command. They can prepare for battle at a command level utilizing capability of each other. US already has geographical commands and now China is also doing it.
If it had been done, the Tejas would not have been the scape goat here, a lot of tax payers' money would have been saved and also Tejas could have had additional funds for its research and development.