I'd rather have a fixed cost than a continuing cost. Why is it better to be paying for a tool every month rather than to own the tool, outright? I'm not seeing the argument
for having to keep paying for a tool that you'd be using, if you choose to use it?
If your argument is that the subscription model allows uncertain developers to get involved, I would argue that tools like this should be purchased by those who are certain they are going to use them. Otherwise, the only benefit is to the tool-maker - and that's the case here. The subscription model only really benefits the producer of the product - not the user, who is ultimately only able to keep using the tool as long as they are paying for it, on a regular basis. Meh. No thanks!