I don't think anyone capable of doing a job ever hired out a job because the tool they had at the start wasn't good enough. They just went and bought the better tool.

Maybe a few people have done that in situations where the cost of the different tool is thousands and much more than paying someone with the tool (e.g. difference between a chainsaw mill and a proper industrial sawmill or a three bag mixer and a concrete plant and fleet of trucks). It's certainly not a situation most DIYers ever run into though.