Welcome to the forum and hoe you will enjoy.
You have brought up a few good points and I can give you some opinions based on experience in the field of maritime security.
You are correct that there currently is no mechanism in place for regulating the industry, and I don’t think you will see that, at least not any time soon. This industry is a bit unique in the fact that you are transiting in international waters, with many different flagged vessels, to many different international ports, with security companies from many countries. The matter of regulating this is difficult at best.
When it comes to qualifications, each security company will have their own qualifications they seek for their team members. In my opinion, there is no need to be the super soldier to work in this industry. You will see a lot of companies advertising massive qualifications for all their men. that seems to be a bit overboard. However, there have been a lot working in the sand box that have moved to maritime.
There is also a lot of secrecy as you have pointed out, but some of us actually work well together. As a matter of fact, I have a team on a plane now, that will meet up with teams from two other companies and they will all work together on this particular transit. This is a positive thing to me, because we need to have a working relationship with some of the other companies to maximize effectiveness in the field. there is enough work out there for a number of good companies to share.
there are a lot of companies that outright refuse to even speak with other service providers, and in my opinion, they are losing great contacts and future support when needed.
When it comes to hiring team members, the first CV’s I throw in the trash are the ‘ego’ CV’s as I call them. the last thing we need is egotistic, trigger happy hacks. we actually have team members from 6 different countries right now and all of the guys are great. Professionalism is the key and working together as a team without the ego.
Sounds like you have the right mindset and background to get into the work.