It looks to me like a lot of you don't even understand how your own tax systems works.
Let's take a video game. In the US, the only tax paid at any point from the time that game starts development to the time it reaches the consumer is the retail sale to that consumer. In much of Europe, the raw materials to make the case are taxed when sold to the manufacturer. The raw materials for the disk are taxed when sold to that manufacturer. The stuff is assemble and that item is taxed when sold to the distributor. Then it is taxed again when sold to the retailer. Taxed a final time when sold to the consumer. Tax is being paid all over the place. And, no, it is not spelled out on the receipt. A whole bunch of that is hidden.
Maybe you should read my post. https://gamrconnect.vgchartz.com/post.php?id=9182353
B2B sales are effectively tax free, so it really doesn't matter that the suppliers charge tax too. As an example:
Manufacturer ($10+$2tax) > Supplier ($20+$4tax-$2tax) > Retailer ($60+$12tax-$4tax) > Consumer
Total tax paid: $12 The exact same amount that would be charged to the consumer under your system.
The only time that wouldn't be true is if one of those businesses is a non-EU business, they wouldn't be charging tax though, just paying it. So it's a net gain for the country and only affects consumers outside the EU.
The majority of times receipts do have Gross, Tax & Net breakdowns. And even if they don't the tax rate is usually 20% so just divide the amount by 6. It's not hard.