Most growers say the same thing, they will keep doing what they are doing regardless of regulations. Inevitably some consumers do want surety that the products they are consuming adhere to certain standards, and government is always in the business of regulation. I think the two need to meet somewhere, but legacy stakeholder engagements seem few and far between with regards to government attempting to learn form legacy gowers and legitimising their existing supply chains. No matter who you are though, if you want to sell your garden variety tomatoes to the grocer, you need to prove that you are following GAP and GMP standards, so naturally cannabis will be regulated within the same framework. It is part of consumer protection frameworks. I do like the idea of people growing their own cannabis, I do the same. But I am generally reluctant to use cannabis from an unknown source (enter my later adolescent phase, haha). Case in point PGRs are really bad, there is a reason they are generally regulated in most countries with regards to produce.
That being said, the market will saturate quickly, and this will be done via corporate routes. The market can only sustain so many 30-100 million rand grow ops, of which a few are already completed, and a couple more are underway. The government goes for massive return over a short period, not sustainable investment in SMEs over a longer period, generally speaking. This kind of model definitely doesn't invest in socio-economic sustainability, but rather flash profits, which (not to be cynical, just realistic) all too often disappears without a trace, and where there is a trace, little to no accountability. Sad to say, but the 'market' is already lost to those who historically have access, and the few newcomers that manage to squeeze in early.