Quite simple. This is a serious real business. You will never want to run that over just a Gibraltar non-resident company.
The benefit of having a proper Limited in a proper jurisdiction that you also live in as the director with proper personal residency + tax id, full VAT, EUR SEPA, fully taxed profits at normal tax rate, fully taxed personal income at normal tax rate, social security if you wanted to, double tax agreements with most of the world, employee considerations etc by FAR outweighs 5%. Heck it would outweigh 10, 15%.