Neutral here: I subscribe to neither.

I found out that there's a backlog of content going back over 100 years (a lot of it at the public library) and have been happily consuming that for about 6 or 7 years now.

(I still have about 4 decades to go to catch up with today—which will probably take me another 3 years or so).

That's my thinking. I get the argument for "reduced competition" but Netflix and HBO aren't competitors. They are just two companies in the same line of business, but with different production lines.

I do wonder what it will do for their sports deals. HBO have had the rights to a lot of sports, including Tour de France and the olympics and is the only way to get EuroSport, as well as a number of TV channels, including some country specific ones.