In general, there are no limits, and in fact any theoretical limits would be very difficult to estimate.

From a drive perspective, what limits adoption of higher capacity drives is the need for a certain level of performance per gigabyte.

Virtue has need of limits

It's hard because it really limits what you can do,

The states have suggested they want limits on Microsoft's development of WebTV, which they view as an extension of [Microsoft's] products to other new media, ... The states want to forestall Microsoft capturing those technological paths as well.

It looks like this is a very good deal for the U.S. textile industry, ... Our objectives were tight limits on our sensitive categories and expanded product coverage. The U.S. government achieved both of those results.