El-Gama also argues that another source of inefficiency/greater expense in Islamic banking and a reason its replications of conventional finance are "always one step behind" new financial products in the conventional industry, is the industry's dependence on "classical "nominate contracts" ("murabahah" credit sales, "ijara" leases, etc.). These contracts follow classical texts and were created in a time when financial markets were very limited. They are not equipped to "disentangle various risks" that "modern" financial markets and institutions (such as "money markets, capital markets, options markets, etc.") are designed to. On the other hand, making their contracts/products more efficient, will alienate the pious customer base that wants contracts/products to follow classical forms.