Then do the calculation to show it. So you're saying they would have a bigger profit margin without him despite that they would still incur the same costs bar perhaps a small administration expenditure?
The calculations were done in the 2 articles mybb published. It was also explained pretty clearly.
Assuming that the link is used close to capacity for most of the time, the effective rate per GB for only the IPC portion of the service is around R4.25 per GB (VAT inclusive).
If they claim that ISPs use close to 100% of their IPC capacity most of the time, one can convert that in effective cost per GB. If an ISP has a total 30Gbps on let's say 50 links and all are running at almost full capacity, you work out
how much 30Gbps would download in 30 days.
Convert the bits to bytes. 30Gbps / 8 gives around an average 3.2GBps download speed.
That is, 3.2 * ( ( ( 60s * 60s ) * 24h ) * 30d ) == 8294400 gigabytes of data downloaded in 1 month ( assuming the month is 30 days ).
Now take the total cost : R920 per Mbps * 30000 == R27600000
Divide total cost by gigabytes used : R27600000 / 8294400 == R3.32 per gigabyte. Add the VAT and you have a close to R4 odd per gigabyte.
That's just a very rough calculation, might have made a mistake somewhere. But as I said, business accounts run at a loss, since if he pays less than the effective cost of his downloads.
If he leaves, more bandwidth is free up, and the said ISP can have 2 or more low-end users take his place. Ergo, more monies.
You can translate total bandwidth into gigabytes

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Also
