Especially when you have mainstream doctors now saying to wear masks. Will anything now change?
No
Unfortunately, not until we start collecting for the first yesomim. Cases start increasing? Eh, it's not so bad, most of us already had it, it'll be fine. The first deaths get announced? Oy, it's sad, but they were old, they were sick, they should have been more careful, but for the rest of us, it's really unnecessary. Someone young enough to leave yesomim dies? Ok, nu, I'm going to be fine, but maybe we should wear masks. You know, my uncle, my brother-in-law, my niece... this one is overweight, high cholesterol, diabetes, asthma.
The frum community does amazing things. When things go south, no other people can mobilize like we do. Even just this year, the blood drives, the food drives, the tzedaka campaigns, the Pesach help, the financial resources and guidance - mi k'amcha Yisroel! Preventative measures... not so much. There's a reason it says Chacham einav b'roishoi. If seeing into the future and taking proactive measures was regular human nature, we wouldn't be promoting such people as chachamim.