True, many birth defects can be corrected shortly after birth, but the surgeries and subsequent therapy and check ups will run in the tens of thousands of dollars, which is a price a national health system can’t afford.
Plastic surgeons around the world routinely perform cleft palate repair on those who cannot afford it (I know several of these doctors, they are all very wealthy and they derive far more satisfaction performing reconstructive surgery on the needy than they ever will from earning money they no longer need performing cosmetic surgery on the wealthy and vain); as far as club feet, the casts to correct them are very inexpensive.