Bull.
From January (eg ~2.5 months ago) they've stopped people being able to download the Open Source Windows, macOS, and Linux versions of Qt without first signing up for a "Qt Account".
eg you're now required to be tracked / able to be spammed / (etc) for even the OSS version of Qt.
That's not how companies "committed to Open Source" do things. :(
The crap they're reported as wanting to do now, is right in line with their demonstrated anti-OSS direction.
It's in virtually every Linux distribution as binary and source. You don't need a "Qt Account".
Grab the official Qt installer, and try downloading anything:
http://download.qt.io/official_releases/online_installers/
It will not work unless you sign in with a Qt Account.
Hopefully having several offline installs of various versions in parallel doesn't cause problems.
Qt being under LGPL, there is nothing that prevents anyone else from redistributing open-source builds of Qt - Debian / Ubuntu through apt, MSYS2 (pacman -S mingw-w64-qt5-whatever), homebrew (brew install qt), conan (conan install qt/5.14.0@bincrafters/stable), vcpkg (vcpkg install qt5)...
On Linux/BSD though, obviously most people use the in-built package managers where the Qt version is recent enough for their purposes.
Have you tried it? Does it ask after the download?
Oh it looks like you obtained that launcher from the old "archives" directory?
http://download.qt.io/archive/online_installers/2.0/
It's unfortunate that only has an old Linux installer. Saw it yesterday, but needed an OSX downloader and was out of luck. :(
http://download.qt.io/official_releases/qt/
At least, after disconnecting the internet connection then ignoring the subsequent error (ironic for an "offline" installer!), it doesn't require a Qt account.
For now we (sqlitebrowser.org) will keep with the easy approach of using the official Qt installers.
If Qt does something even further dumb though, we'll likely move to compiling Qt ourselves. And probably then make installers (.msi/.dmg) for anyone else that wants it too. ;)
Linked email from KDE:
> But last week, the company suddenly informed both the KDE e.V. board and the KDE Free QT Foundation that the economic outlook caused by the Corona virus puts more pressure on them to increase short-term revenue. As a result, they are thinking about restricting ALL Qt releases to paid license holders for the first 12 months. They are aware that this would mean the end of contributions via Open Governance in practice.
TFA (the entirety):
> There have been discussions on various internet forums about the future of Qt open source in the last two days. The contents do not reflect the views or plans of The Qt Company.
> The Qt Company is proud to be committed to its customers, open source, and the Qt governance model.
So, are they claiming that they never planned to "restrict ALL Qt releases to paid license holders for the first 12 months", or are they saying this plan still counts as "committed to open source"?