To Vladimir, nowhere near 11 million copies have been sold for Battlegrounds, it's sitting currently at ~712,000 copies sold. H1Z1 is just under 5 million copies sold. If you're talking about money, then you're right.
To OP, BG isn't going to "steal away players" both BG and H1Z1 are doing just fine as far as player base is concerned, and all three games (H1, BG and IoN), are fairly different in their own ways. Each will be able to coexist while having the same concept behind them.
To DUBv_NRx, IoN isn't "throwing their name out there" because it's still so very early on in development. But I remember watching DrDisRespect stream one day and someone asked if he knew about IoN and he said he's played it, but can't comment because of NDA. So if they're in talks with a big streamer like him, when it comes time to actually get the game out there, it should be relatively easy.