Because we (the EU citizens) need some internet and software sovereignty. It's a valid desire. Most of the governments run on software owned by companies that can be under control of foreign nations.
A certain level of independence is good for any nation, group, society.
Besides from that EU law provides us with some guarantees regarding privacy. If a company doesn't respect our privacy, we have the means to defend ourselves.
Billiard balls and playing cards. Belgium is world leader in both.
Edit: forgot to add pigeons. Belgian competition pigeons are the most expensive in the world.
Edit 2: Belfries. Clock-O-Matic is a Belgian company and world leader in the automation of Belfries. It's not that hard because most Belfries are located in Belgium and France, if not all of them.
Edit 3: It never ends. Roller coaster wheels. Let that sink in. No their country produces more roller coaster wheels nor is as good as we arr at it.