multiple file upload for everyone

Can someone tell me a good reason why multiple file uploads are not available to all wordpress users? Like this:

<form name="upload" method="post" action="upload.php" enctype="multipart/form-data">
<input type="file" name="fileupload[]">
<input type="file" name="fileupload[]">
<input type="file" name="fileupload[]">
.....
</form>

Basic stuff, no need for flash or progress bars. At the moment, because I use Mac and my web host runs mod_security, I have to upload one image at a time.

The default browser uploader should support this and a button to add extra file upload elements.

Rob