Not as a first class citizen. * It's only recently you could have unattended updates of applications. * It was not possible to distribute additional app store

Not as a first class citizen. * It's only recently you could have unattended updates of applications. * It was not possible to distribute additional app stores in Google play, third party stores had to utilize sideloading which includes "scary" warning messages * Googles terms and conditions essentially required the play store be installed by default by vendors.