First of all, before I answer, thank you woppin, for providing actual reasons unlike others in this thread! Much appreciated. Also, thank you for being polite and not condescending or denigrating uselessly.
Joining someone else's lobby requires the host to be prepared to kick randoms in order to play against your team, which isn't always a given,
If your team was hosting and a single guy from a premade came along with two randoms asking you to kick the randoms so that his team could join, would you? I sure hope so. I also hope that soffacet, wickedbear and itchy's teams would.
Especially if the game is titled as "premades" but also if you title it "only really good ones" or something to that effect. Of course you probably should be polite towards the ones you kick but if they really are very good players (as they should be joining your appropriately titled game) they should understand.
Are all/most non-forum-posting premades somehow way more cowardly than you guys? An honest question, mind you.
and also due to the host disconnect bug places you at the mercy of the host's sportsmanship, which isn't suitable for competitive play.
I play always at the mercy of the host but I can't recall a single time they have disconnected in an unsportsmanlike way.
I don't think teams are actually avoiding each other, there's just no reason to trust strangers and it's easy to host your own lobby knowing you'll have 3/6 and it will fill with randoms quite quickly.
But those randoms are noobs! The match will be a boring stomp. I'd rather play one good game than two quick stomps. I believe that you would, too.
There are also players from the top 200 spread all across the world, who play on different days and in different timezones.
Most of the time when I open the Custom games view I see at least two and often three or more premades hosting games. If one of those didn't host but rather joined an already open premade they would have a good match.
Some of the good players don't have great connections so playing out-of-area is impossible,
Aye, this is true. When you have a team of three or four EU people for example, there is a very real chance that one of them doesn't have a great connection to the US.