Famous example: MS Windows having a marketshare of 96% should not necessarily stop you from designing your business around linux.
"MS Windows having a marketshare of 96% should not necessarily stop you from designing your business around linux"
But Windows doesn't have this kind of marketshare in most areas going forward? The #1 OS used worldwide is AndroidOS and no one is clamoring to write for it as far as I can tell.
Your opinion is 'yes'. OP's opinion is 'no'.
Both are valid opinions and highly depend on the nature of your business.
But, OP's somewhat un-american sentiment aside (which I believe is mostly what you're reacting to, rather than the general nature of their argument), I agree that erring on the side of caution and minimizing external liabilities should be on the top of the agenda for any company.
And this is aside from the whole "support local infrastructure and don't empower monopolies further" argument.
That said as a european I have to consider my interests and interests of my business.
I think EU/EFTA is large enough to enable the growth of at least one 80% offering given enough time. Or otherwise large enough as an economic bloc to force America to stricter legalisation so that they can use and depend on the American offerings.
Amazon can sure kick your company off its services.
For many startups AWS is a no-brainer, which makes life somewhat harder for anyone who wants to deal with Iran from EU (as long as EU allows it) and not be shut down on a US three-letter agency's request.