To be fair I did see some news on the anniversary of Jackson's death. Maybe not a huge scale but I did hear about 10,000 roses were delivered to his grave and the tweets from celebrities.
To be honest I don't think Bieber looks at Elvis as much of an influence, he talks about Jackson. He tweeted, RIP you were the best that ever did it and called him the King. When you watch him perform he thinks he is Michael Jackson with all the crotch grabs and moves.
I also don't think Elvis had but a few hundred to a thousand or two for his first few anniversaries of his death either. So who knows maybe Jackson’s will grow more over the years.