https://www.cnet.com/news/to-boost-homepod-sales-apple-should-look-to-the-airpods/

According to a Bloomberg report, citing data from Slice Intelligence, a market research firm that tracks e-commerce sales, the HomePod's sales have slowed considerably since it launched.

Slice -- as cited by Bloomberg -- says that during its first 10 weeks of sales, the HomePod carved out 10 percent of the smart speaker market. Amazon's Echo devices were at 73 percent and Google Home products accounted for 14 percent during that time frame. By three weeks after its launch, HomePod's market share dipped to about 4 percent on average (albeit with 19 percent of the segment's revenue), Slice says, with Amazon's Echo device currently pulling in about 68 percent of smart speaker revenue.