Today, we have plenty of that but international ice shows are no more here to provide skaters with stardom and future career. The show business relevance of ice shows has faded. And we complain that we have not received our coveted piece of showiness. Oh, how could this happen?... I think it is definitely worth to look back at Sonya Henie for full picture.
I wouldn't agree about shows though. It really depends on where you look. They have been thriving in Japan, with some 70 shows this year alone there. In fact, as we know, there are so many that the competition between them has become too fierce and it is not so easy to have them sold out any more, the way it used to be just a few years ago. Still, difficult to say they are non-existent or non-relevant, and many skaters, including non-Japanese ones, still get their bread and butter from these shows.
Sure, they have changed, and keep evolving all the time, and they are not the same as they used to be but at least some of them are still in very very high demand and surely some skaters benefit with a prolonged stardom and career. Yuzuru and Mao are surely the first ones who come to mind with Yuzu planning his birthday party in Saitama this year as his new show prime night, pretty big and not showing any sign of fading

Yuna was very active in the show market in Korea for a long time, I am not sure if she still does shows or not, but she did until very recently, and very successfully, just like the other two.
Many others also do well., though maybe with less spectacular success as they were that bit less popular to start with.
I am not familiar with what is happening in Russia now but, from bits and pieces of what I hear, shows are still many and successful there, and Russian star skaters of various generations are thriving in them.
There are some attempts in Europe, too.
So I do not really think this diagnosis is correct, or maybe it needs some explanation of what you mean by this.
Sure, some shows are losing viewers and interest while some other gain them and thrive, but this is just a normal thing, happening all the time.