Half a million a year in profits / wages is definitely a bit beyond lifestyle business. In wages it's possible top of field in something that really matters to a large enterprise. In profit, it's a whole lot of work in a very specific and high value area.
Yep, I saw it take about 15 years trying and succeeding to build a web hosting business before the owner / founder was getting near that for themself. Software can be faster, but that's still extremely lucky and/or lots of hard work.
