https://bugs.winehq.org/show_bug.cgi?id=40134
--- Comment #3 from Michael Müller michael@fds-team.de --- (In reply to Rosanne DiMesio from comment #2)
As far as Launchpad is concerned, I don't understand why you're using it in the first place. The old Ubuntu Wine PPA is not only still available, when you google "ubuntu wine ppa" that repository is the first result. Because of that, we have users who mistake that for the "official" repository and end up on the forum asking why their package manager keeps telling them some old version of Wine is the latest available. From a user support standpoint, I would MUCH prefer everything to be on dl.winehq.org.
There are several good reasons to use Launchpad. Ubuntu users know PPAs and they rarely have to deal with debian style repositories. There are a few exceptions since Launchpad doesn't allow proprietary software, if you don't pay for a commercial subscription. I can't remember ever having to add a debian style repository for open source software during the time I used Ubuntu. Why do you think users google for "ubuntu wine ppa" if this is not the case? I also don't see how this should ever return dl.winehq.org as search result which is obviously no launchpad PPA.
Besides this, there are also some technical reasons. There are currently 5 Ubuntu versions supported by Launchpad. In order to build packages, we need a 32 and 64 bit VM for each of these versions. This means we need to maintain 10 additional build VMs. Further more they publish a new version every 6 months, so this is a lot of additional work, while Launchpad does this just fine.