I have quite a lot. Will be some work to figure out how much exactly, but I think just SingStar songs alone would fill up the free space on the Wii.
I bought the 360 with 20GB, of which 14GB usable if I remember correctly, and at some point I rammed a USB drive with 16Gb in there (which is all that was supported at the time), and it's doable only because I don't use the 360 a lot, and play very specific games I can only get on 360.
On the PS3, I have two, and games are spread over the 320GB one and the 160GB one. The latter one is already completely full to the point where it's sometimes annoying, but I game much more on the 320GB in the study now, so that's not such a big problem.
I think though that generally, people who bother to buy stuff online, will also bother to add additional storage. So as long as it is fairly easy to add an external harddrive to the Wii, U, that may be enough. After all, the 4GB 360 also exists. The market for people who barely download stuff and buy everything at retail is significant.
Where both Microsoft and Nintendo may run into issues is for Apps and services. But Microsoft is almost ready to go next-gen, so not such a huge issue for them. Nintendo just launched the system, so that may be holding them back in the future. You'd hope they've reserved a lot of the 5GB for future stuff in that respect, and it's not reflective of them actually completely using it up.
And otherwise, they'll just sell official bits of neat little USB storage or small HDD extensions at some point, no doubt.
I bought the 360 with 20GB, of which 14GB usable if I remember correctly, and at some point I rammed a USB drive with 16Gb in there (which is all that was supported at the time), and it's doable only because I don't use the 360 a lot, and play very specific games I can only get on 360.
On the PS3, I have two, and games are spread over the 320GB one and the 160GB one. The latter one is already completely full to the point where it's sometimes annoying, but I game much more on the 320GB in the study now, so that's not such a big problem.
I think though that generally, people who bother to buy stuff online, will also bother to add additional storage. So as long as it is fairly easy to add an external harddrive to the Wii, U, that may be enough. After all, the 4GB 360 also exists. The market for people who barely download stuff and buy everything at retail is significant.
Where both Microsoft and Nintendo may run into issues is for Apps and services. But Microsoft is almost ready to go next-gen, so not such a huge issue for them. Nintendo just launched the system, so that may be holding them back in the future. You'd hope they've reserved a lot of the 5GB for future stuff in that respect, and it's not reflective of them actually completely using it up.
And otherwise, they'll just sell official bits of neat little USB storage or small HDD extensions at some point, no doubt.