Daz is probably doing £50 per hour average, £250 a day so £1000 a week. £46k a year give or take. His business overheads are tiny and his personal expenses are even smaller. A very decent lifestyle for him.
If you’re living in the south, have a £200k mortgage costing £1500 a month with 3 kids and all the expenses that come with that then £46k per year isn’t going to fund that and you’ll likely be skint.
Horses for courses but fair play to Daz, it works for him,