I'm not sure where you're coming from with this, but I'll give it a shot:
The overheard added to an application by wrapping it in an installation has grown smaller in recent years. In one recent article somewhere here on the site, someone was talking about a freeware installer that claimed, if I recall correctly, to add less than 100 Kb. I'm not sure what sort of utility programs you're referring to, but there are many, many useful programs well under 1 Mb in size even counting the installer.