We haven't found a vaccine for AIDS in 30 years. Why do we think we will find one for Corona in the next couple weeks?
Making a vaccine is a time consuming process, but for someone who is familiar with the process, it's not particularly difficult. It doesn't take research from square 1 for every new vaccine.
There have been 3 corona virus outbreaks in the last 20 years and the government has been subsidizing massive chicken farms since then. Most vaccines are grown in eggs . To get enough eggs to make a vaccine that can facilitate herd immunity takes about a year .
Aids is different from viruses that can be vaccinated because HIV is literally an attack on the immune system. Most vaccines just mimic the processes and chemical reactions that the body naturally produces when exposed to a virus.