There is a free map... g****e maps ^^
I do hope there wont be a map where you do see everything. I see maps more like something explorer will create while exploring some waters. So they should be able to sell those maps and such map is completing you own map set. But it is only static and not showing any map updates. So if a city got sacked by Spain and you didn't get an update of the map where the city is Dutch, you might have a problem at hand. Furthermore it will be nice if you would be able to use geometric tools on the map to plan your own routes etc. If someone else did suggest something like this before, i apologize for having the same idea.