[Haplo]

Although this might prevent (a bit) that the phishers get the actual data and hence protect the victims, I am pretty sure that it won't cause any drop in phishing attempts. However for the legitimate users it will probably have a huge negative impact.

It's comparable to trying to stop spam in forums/blogs by disabling url's in posts. Usually you'll get the same number of spam posts, but the url's will be plain text.

[mike-cardwell]

It might actually be a good thing commercially. It gives them something to upsell. If you have a paid account, you get instant access to your form data. Free accounts have to wait.

[brmj]

I doubt it. Very little annoys users more than taking away something they are used to and trying to sell it back to them.