I watched that show and it doesn't say how many employees etc., three guy could do that easily, if it is monthly and not 4 weekly two guys could do it. But the guy built up his cleaning firm offering pretty much anything they could turn there hands too, and went for allot of contract work, and good for him.
But what's the point, if you have to sell pieces of it to someone else just to afford growth. Also his profits where not that great, after everything was said and done.
Sales and profits are often very different.