HAVANA (AP) — Two years after taking office, President Raul Castro widened the niche for private enterprise in Cuba's state-dominated economy. Capitalism came pouring in. Slowly at first, then gaining speed, spare rooms for rent became rental homes, which became boutique hotels. Backyard cafes became elegant restaurants and bustling nightclubs, backed with millions in capital from the prosperous Cuban diaspora in Miami, Latin America and Spain.