It kinda was the last hurrah in one sense
1984 was probably the last "innocent" Christmas where everybody expected that buying a computer was a one-and-done thing, it would carry you for years and years until the wheels fell off and when it did so you'd just move swiftly over to a new shiny one that was ofc just like the old one - know how to drive one car, know how to drive them all. And it would help you with your homework and prepare you for the future.
By 1985 there were new generations of computers and the punters could see that there was a divide in the market, that things were changing, stuff was getting more expensive the more "bitty" it was, and the "for business" stuff was obviously nothing like the "home" stuff and much more expensive. You certainly weren't bankrolling _yet_another_ home computer that would end up with the kids playing games on it; but give it a bit of time and you _might_ come around to invest in one of those 'serious' machines you could use for work-related stuff at home. Still, there's absolutely no chance of buying a _second_ computer in the home, and if they want to play games you know that there are some that can run on the serious machine - a mate you know said he could sort some for you.
So the old 8-bits were relegated to games machine, accepted as that, and continued to sell as such as they kept coming down and down in price, while the market for the 16-bits (IMO) was for those who had come out of the first round of home computers and found their 'mission' and were willing to prioritize money spent on those over the current pastimes of the yoofs of the day. The PC was ofc a runaway train that nobody can stop any longer, that rolled over all the others in the market.