Why would a company deliberately throw away its competitive advantage?
Customers used to choose an HP calculator over the competition for two main reasons:
1) RPN
2) Ease of use coupled with good key feel and high-quality durable construction.
Any calculator from HP that does not rely on these strengths is doomed. The very successful HP-12C is perfectly aligned with HP's competitive edge. Compare this to the recently discontinued HP-6S (algebraic entry, poor construction, lousy key feel).
HP must either exit the calculator business entirely or else HP must rely on these two competitive strengths and try to return to greatness. There is no middle ground here. It is either one or the other for HP.