But owning a company, you have far more costs than being employed. E.g. in The Netherlands (it must be similar in Belgium), you have to pay 19% VAT and add lots

But owning a company, you have far more costs than being employed. E.g. in The Netherlands (it must be similar in Belgium), you have to pay 19% VAT and add lots of insurances that your employer normally pays a substantial part of (disability insurance, liability insurance). Then you probably need a lawyer, and/or insurance for that. And the list goes on... Things become even more expensive once you start hiring employees, etc.