In a nutshell because this could be a lengthy topic:
No PUNISHER director's cut on DVD.
And all the DVDs available (most not legit) were made from the same main source (region 1) + VHS for restored cuts...
Probably no Blu-ray any time soon because as I might have mentioned before:
It sounded unlikely that the uncut version of the film will ever wind up on DVD in the States, since nobody seems to know who owns the rights.
from
http://www.entertainmentbuff.com/the-punisher-1989/...and that's a worldwide issue, a friend of mine wanted to launch his French DVD company by releasing a PUNISHER collector edition (for which I would have worked on) but couldn't because we found out all the rights were kind of MIA...
P.S. I think Dolph was kind of doing method acting on this film so he was staying in character as much as possible, although it didn't keep him from partying...