Boosters are gonna be the norm moving forward, I highly recommend people to check out TWIV (This Week In Virology) Podcast it has a lot of information based on real data and studies coming out.
The norm? I'm highly skeptical. Why isn't there more focus on preventative measures? Even with the Measles vaccine we know to give vitamin A for treating measles.
Here in Europe we already going with preventative measures however if the vaccines have a drop off it's normal to be going for boosters moving forward at least for folks with age 50 and above.
Link - https://www.youtube.com/watch?v=VkhN4rC19RI