Tivo briefly had a competitive advantage when they first launched their digital video recorder (DVR), which at the time was a completely unique technology that had taken many years and millions of dollars in R&D to develop.

However, because they did not adequately protect their technology with patents, within a very short time numerous competitors began producing DVRs which they were able to sell to customers at a price that TiVo couldn't match (because the competitors had simply replicated the technology without the expense of a lengthy R&D process).

This is an example of a competitive advantage that ceased to be sustainable because it was no longer:

Group of answer choices

Valuable

Rare

Inimitable

Nonsubstitutable

All of these

None of these