I don't think that's really the same thing.
Internet isn't physically addictive, you brain won't literally stop working if you miss a dose like you do with hard drugs. And it's entirely possible to function fine during the workday and then come home and just spend your free time online.
You can't just do meth all day and still function fine in society. Which is why drug addicts tend to be homeless, not just living in their house as you claimed.
But I do see your point that internet can be considered an addiction any time it's effecting you negatively, even if you do only use it in your free time.