The value in that scenario is being removed from the consumers not the companies, the consumer is the source and they exchange their data for services that would otherwise cost money. So in effect such a law would make the people poorer. Europe will probably like the idea because they've given up on fostering a competitive software industry but for nations that want to matter in cyber space like the US, China, Japan, and Korea, it's hard to imagine such a tax (essentially a production tax) actually benefitting consumers wallets.