App Popularity Contest?
Wanting to "shut down" apps which are rarely-used implies all "real" apps are web-based or only work via Internet connection, which is false. Further, popularity != value. It's rare that I have to look up the specs of an old hard drive and download the hard drive's firmware-flasher, but when I do need to, there is no reliable [current and malware-free] alternative to the manufacturer's website. If the manufacturer purges the data and software pertaining to an old drive simply because "it's old and unpopular", the manufacturer is destroying value.
In the context of government services, how many times a year does a person get married? Far less than once, on average. But that doesn't mean there isn't significant value in letting people apply for marriage certificates online, even if they have to pick them up in person.