Do you think internet business can be a main job for main earning? If yes, what should i do to make it as main job? And what is the weakness and advantages on choosing it as main job?

I'm wanna Internet business become my main job. After i graduate my college, i wanna concentrate in building online making money kingdom.

I think by doing internet business as main job, i can spend more time for my family and friend since internet business is can be done by just manage it about 5-6 hours per day. And the other advanatage is, no need for you to go out from home. You can doneyour job from your bed or while eating

Until now, i just can't find the weakness of choosing internet business as main job.