Stages WvA shoulda/coulda won:
Stage 1: no.
Stage 2: yes, definitely, if only Vingegaard helping out with one big pull.
Stage 3: yes, definitely, if only the jury did their work (and he kept sprinting) or simply if Philipsen didn't close the door (I saw WvA closing in).
Stage 4: not really, but JV pulling before the last 3K, when WvA was out of position, really didn't help for him to regain position. JV effectively killed WvA's efforts to get back in the first 15 riders. He was around 30th spot for most of the circuit, but still managed 10th on the stage.
Stage 5: no.
Stage 6: no.
Stage 7: he didn't try.
Stage 8: yes, definitely. He was by far the fastest / strongest.
Stage 9: yes, but with big ifs: if he rode like stage 5 or 6, and if the race dynamics were the same in the lead group (killing eachother with more than 50K to go --> he could most definitely do what Jorgenson did, but he could pull it off until the end).
Stage 10: no (but yes, with the legs he had in the last 3.5 tours, it was a perfect stage for him).
So all in all, he shoulda/coulda won 3 stages (2, 3, 8), and there was some untapped potential in stage 4 and 9.
What is still possible:
Stage 11: Yes. Not impossible with WvA's excellent positioning and a long straight finish.
Stage 12: only from a break without good climbers, or in the (unlikely) case there is a reduced peloton sprint
Stage 13: no
Stage 14: no
Stage 15: no
Stage 16: Maybe. It's a TT, but WvA's not really saving himself.
Stage 17: no.
Stage 18: yes.
Stage 19: yes.
Stage 20: no.
Stage 21: yes
So all in all, the second half of this tour delivers less chances (but still enough decent ones). Nothing is impossible, but WvA better picks his stages. I feel he is waisting a lot of energy and wasn't patient enough...