Consider the third paragraph of "What happens if a coronavirus vaccine is never developed? It has happened before" (emphasis mine):
Instead of wiping out Covid-19, societies may instead learn to live with it. Cities would slowly open and some freedoms will be returned, but on a short leash, if experts' recommendations are followed. Testing and physical tracing will become part of our lives in the short term, but in many countries, an abrupt instruction to self-isolate could come at any time. Treatments may be developed -- but outbreaks of the disease could still occur each year, and the global death toll would continue to tick upwards.
Does the first may suggest anything like maybe will (as in it may rain tonight) and the second may and the two coulds suggest maybe would (as in conditional maybe sentences)?