Yes, he contributed some fundamental inventions to those fields, but it took other people to turn them into mass markets.
For instance, he was right about alternating current, but he wanted to transmit power through the air rather than wires. And other people who wanted to transmit information rather than power through the air came up with another useful market, while Tesla was burning through other people's money.
Had Tesla stuck to inventing, rather than trying to show how superior he was to everyone else, especially business people, he would be more well known today.
Tesla was burning through other people's money.
That's a load... Tesla foreswore somewhere on the order of 12 million in royalties owed him by Westinghouse in just the first 4 years of licensing his patents. The company was trying to consolidate and they went on to make a mint AND wire the country with AC... Tesla tended to get the short end of the stick in any of his financings because he just didn't particularly care about the money in any way but what research it could facilitate...