The Southern California real-estate market is feeling the sting of a changing climate, as a pair of new reports finds renters, would-be homebuyers and black households losing ground in the face of competition from investors and a widening racial wealth gap. In a survey of 80 community-based nonprofits, the California Reinvestment Coalition found that long-term tenants are being displaced by high rents while potential first-time homebuyers are losing out to all-cash offers from investors.