Currently there is no convenient way for end end user who has purchased software from an ISV to install a side-loaded MSIX package machine-wide (for all users). Software is often licensed on a per-ma...
Adding;
<Capabilities>
<rescap:Capability Name="packagedServices" />
</Capabilities>
Causes the MSIX to install Elevated (much like an MSI)
Having an option under Properties like;
<upa10:InstallForAllUsers>
<uap10:InstallForAllUsers Value="True" />
</upa10:InstallForAllUsers>
That provisions the package for All Users without the use of PowerShell (User would have to pass UAC or be running from an Admin level PowerShell/CMD/WT prompt) would make a lot of sense (well, at least to me) and help out as Users are just used to installing by Double Clicking things, and not having to use PowerShell.