If you can think of a better term than "real participant" please let me know.
If your job is to record or settle trades, be a day trader with no overnight position, track share holdings, etc. then you are a part of the machinery of this capital market, but you are not one of the participants who provides, or consumes capital. You are part of the cost structure.
The real participants are those who actions reflect beyond the casino itself, and out into the economy beyond.
The purpose of share markets is to provide capital. Long term capital for companies to invest, and in return to provide long term profits for those providing that capital.
If you are providing or consuming capital, even for one day, you are to some extent a real participant.
I think it is fine for people to make money, brokers to charge a fee for a trade, day trading, advising on diversification, etc.. But we should understand that these are costs associated with this system of providing capital/investing.
You sound like you provide capital and participate as an investor.