Do you feel that there are some obligations...? You weren't just a real estate agent; you were a broker, which means you were responsible for other agents who worked for you. You actually had a higher obligation to understand the laws within the jurisdiction in which you operated. Just as sometimes tax policy changes, either provincially or federally, and it's your obligation to understand what those changes are and to file your taxes accordingly. Furthermore, when you get a real estate licence or when your agents get a real estate licence in Ontario, there are obligations. You feel that for FINTRAC the government has the obligation to inform you, but for things like paying your taxes and remitting the actual taxes or knowing any changes, you have to understand your obligations as a business owner.
FINTRAC works with local associations—in your case Ontario—and the Canadian Real Estate Association to provide information to their members. Did you ever go to CREA or the Ontario Real Estate Association to ask how come they didn't provide you, as a member, with this information?