The early Mughal rulers did not impose Islamic law on everyone, nor did they oppress non-Muslims. Which is why Akbar, Shahjahan etc received acceptance and support even from the Hindu princes. Aurangzeb set about on a mission to oppress Hindus and destroy Hindu temples, and enforce Islamic rule on everyone. The result is there for everyone to see - the Marathas conquered most Mughal territory and went on to establish the single largest empire in India till the British took control. Aurangzeb died a lonely man at the age of 90, with the Mughal treasury almost depleted.