I can imagine a 5mb+ web application too, but there should be some way of communicating something needs a lot of resources before it is casually downloaded. I

I can imagine a 5mb+ web application too, but there should be some way of communicating something needs a lot of resources before it is casually downloaded. It's impolite for an installer to not tell you it's copying 50GB of data to your hard drive before it starts. "640K ought to be enough for everyone" is shortsighted, but "Web applications should not assume the user wants to dedicate all system resources to them without knowledge/permission" is not. It won't matter much longer. Websites are giving way to phone apps. Where no visibility into behavior or resource consumption is normal, standard, and expected.