My guess is yes. On the basis of public information, Sentech clearly has no budget to do what they are doing (when did they ever?), and I would guess that they probably do not have broad government support, especially since NEPAD was really a Thabo Mbeki thing.
A landing station alone (excluding what they would have to spend on the cable as a consortium member) is likely to be $5m - $10m. More likely, they'd be looking at anything from $25m to $50m of OUR MONEY. Like most other things that Sentech touches, it obviously won't be profitable (what kind of investor buys into the fourth new cable in three years?), so we'll basically be paying for it, with money that could presumably have gone into providing terrestrial HDTV, which is what Sentech is supposed to do. This is very different to WACS, where all the major SA telcos are investing their own money, and will actually deliver real competing services.
Let's hope that the General is not doing what Ivy used to do, which was to try to use Sentech as a weapon in the market (e.g. MyWireless), only to have it all fall apart when she tried to get broad cabinet and treasury backing for hair-brained schemes. There was ongoing "competition" between DoC (Sentech) and DPE (Infraco), to see who could waste more government money on being a player rather than a referee.
For the country, much as it might seem sensible to have as many cables as possible, one really does have to question who would foot the bill for ACE, and whether we really want yet another inefficient state enterprise doing this kind of thing.
Not much has been said about Baharicom - Bahari is Swahili for Sea

- but they make the Sheik brothers look like ethical businessmen, the only real difference being that they appear to have no money (yet). This is hardly good company for the South African government.