Imho if you compensate for those benefits the 'more money' part isn't really that much more money. Most freelancers just end up with 'more money in hand' because they (sometimes unknowingly) simply take on a lot more risk (e.g. way less or no insurance for certain risks) and/or they don't consider that a nice chunk of pension savings are part of a regular job's benefits.

I'm going this route at the moment and while it's true my gross profit will probably end up close to 2x my previous gross salary... after properly compensating for all the other benefits I'd probably end up with 1.2x instead (but to be fair, I'm willing to accept certain risks so I won't insure against them and I'll probably end up with ~1.5x my previous salary.)

Imho in The Netherlands the biggest advantage is the flexibility it offers compared to being an employee.