For example, the ice cover in Greenland is melting at a record rate. If it goes completely, this alone would raise the sea level with something like 7 m (23 ft).

If everything goes, it will be something like a 65 m (213 ft) sea level rise.

Now, given the sluggishness of action-taking in this matter, some of the ice cover will almost certainly melt before anything gets done.

The end result will probably be much more than a few feet, but less than the maximum, so let's guess 30 m (100 ft).

Now, I suppose some self-correcting actions are automatically taken when enough people get displaced and pour to dry areas: traffic ceases in the coastal cities, air traffic to these areas will cease as well, factories will stop, and so on.

But still... given +30 m, have you already checked where the current coastline would be where you live?