I have no idea whether their offering is any good or not, but I don't find your argument persuasive. The fact that someone else tried to do something similar do

I have no idea whether their offering is any good or not, but I don't find your argument persuasive. The fact that someone else tried to do something similar does not mean that this can't work well, or that it shouldn't be done. People once said that Apple shouldn't do a tablet because it had been done before and there wasn't a market for them.