You're looking at it from the point that trenching from one house to the next (20m) costs R10k and it is therefor not possible to connect a house for R3600.
Correct, because we plan precisely these builds. If you have a model that works for R3,600 per 20m I am all ears. I honestly and sincerely am!
Not only that you can't put a cost of R500/m for trenching from house to house
Because you say so or because the entire industry is wrong?
what you are also not considering here is that you have to trench past 50 houses for 1km to reach that one house paying R1k/month. That is why you want as many as possible along the same route to take up the service. The people taking the free option is in fact contributing R3600 towards paying for your network cost and not adding a cost of R10k to it as per your reasoning.
Sounds nice in theory, but doesn't practically translate very well into a proper financial model. You as the ISP are now paying for the customer's bandwidth each month. You've essentially simply asked for a deposit on bandwidth, else you are subsidising the bandwidth breakout portion from everyone else. It doesn't solve anything at all in reality and unfortunately doesn't translate into a bankable document well either. Just so you're aware, a local and international blended per GB rate is still around the R2/GB mark, whether you buy capacity or pay per GB.
Unfortunately though it doesn't cost R180/m to trench fibre. It simply doesn't. When it does, you'll see a substantial increase in fibre deployments. It is however closer to R500/m and higher depending on who you use. It's unfortunately the reality, and a reality anyone faces when starting to crunch these numbers, and is the reason FTTH deployments are so targeted and based on more than just number of people who show interest. One of our most important variables is a density uptake target and average build distance ratio. Each time someone completes an entry into fibrenetwork.co.za we analyse this and move it into a specific proposed project, and those project numbers are refactored. Once refactoring shows density ratio targets that make financial sense, we begin to approach our suppliers to scope out the work and provide us with quotes (that we pay for [from multiple suppliers]). Thereafter we begin the process of creating the marketing around this to secure the uptake on contract before committing further funds to it. It's nice in theory to say that we'll just build it ourselves, do all of the trenching, do all of the splicing, manage the wayleave process, and build the network itself. I'm afraid that's not viable, and we know that it would cost more in the long run, because we are not a civil works company and are therefore not specialised to do this.
DFA know they cannot achieve ROI doing it all themselves. Telkom have accepted this. Neotel know this. Vodacom are starting to accept it (we believe). MTN has made money from this. Cell C will one day know what they're doing too. Dimension Data know this. As do numerous tier 1 operators. The fact that one provider thinks they know better using a model that makes no financial sense, while trying to be a jack of all trades, with a single retail based product, does not mean they won't achieve it. It just means the odds are stacked against them and there will be considerable scepticism about their legitimacy.
Needless to say, there are a number of developments in the last mile space which proves to be the costly aspect. The regulator is aware of this, and is busy working on new regs that could be a bit of a game-changer. Patience should be rewarded soon here...