I think most of the people that could do that for the LAMP stack could probably get through setting up a Ruby or node server without too much extra time. Also,

I think most of the people that could do that for the LAMP stack could probably get through setting up a Ruby or node server without too much extra time. Also, once you're done it, how hard is it do repeat? Yet I don't see folks making these same arguments against Heroku. One of the key points I got from talking to Lucas is that he's focusing not just on scalability, but HA, which is something that while not hard to do for the LAMP stack, isn't trivial either (usually it's just a matter of time spent setting it up). The other neat (or annoying step) is that PHPFog goes the git route for handling your code. Just signing up and creating a site puts a default codebase for the platform you've selected into your git repo, and you just check it out, and commit to get started.