The issue was the sheer number of various regulations/standards/(taxes?) changing by country.
It was good enough for the US.
> It was good enough for the US
A lot of things good enough for the US are not considered suitable or safe here.
Correctly so, I might add.
If your government is not concerned with public safety, why should the EU adopt the same stance?
What was different between countries?
For electronic products, it should be enough to get the CE mark on your product, and it can be sold in any country. That is the point of the EU, that any company can sell it's products or services in the whole union, there are regulations, but they are union wide, not specific for each country.
Unless you were making something very special, that each country wants to and is allowed to regulate separately.
Taxes can be different, the VAT % is different in each country. But so is it also in each county or town in the US, and your people claim that this is the reason why you can't include taxes on prices in grocery shops, which is difficult to believe here for our people. So dealing with different tax rates shouldn't be big news for you? I mean... there are lots of online shops that know about different tax rates, it's not difficult. Or you could let someone else handle it for you.