But when you are a small app running on a corporate citrix, APP-V, or whatever locked-down environment you are out of luck.
You will be able to update the app running inside electron without much of an issue. But you won't be able to download and execute a new exe.
Microsoft has the network to train, enable and get IT to administer these kind changes. They are after all able to get windows patches in fairly regularly at higher frequency than ever before in windows 10.
Sure there were will be some small minority like still active XP users , you sell extended support or whatever to either enable them or you can stop support.