DotA - What has it become? TL;DR warning.

Anyone familiar with Warcraft 3 knows what DotA is. It was a hugely popular custom map created using the WC3 engine and played over battle.net. It became so popular that the DotA communities and WC3 communities were separated. DotA was practically another game, entirely community driven. It even sparked Basshunter's rise to fame after he sang about it in his remix of Daddy DJ.

But this isn't about what DotA is/was, it's about what it's turned (or turning) into.