That's fine in a perfect world. I rode in the north of Italy where there is one meter of nice clean pavement to right side of the driving lane - like extra space. No big kerb, or drain shafts, but one extra meter of nice clean pavement. Like an extra bike lane.

The opposite side is a road I often use where there is a tall kerb right on the edge of the right lane, with lots of potholes and drain holes in the right side of the lane. Those are two extremes.

If I stuck to the right picture style of riding all the time, where I live, a driver would get out of the car to strangle me. Common sense and courtesy go a long way. Where there is room, I'm glad to move to the right side and let the cars go past. In addition to that drivers in my country almost NEVER give you more then one foot of room when passing you, regardless of the position in the lane you take.