If we talk about Russia, the total IoT market is $ 3.7 billion. But the market is not co-consolidated, there are a lot of players. The leader has not yet been determined, so it is safe to say that there is no proper distribution today.
My opinion is supported by the fact that the growth of the IoT market in Russia in 2019 amounted to 8.3% in dollars. This is not impressive.
In my opinion, the main problem of the Internet of Things now is the lack of a standard in the industry. Just imagine, you bought yourself this system from manufacturer A. Now you have to buy everything from this manufacturer: a washing machine, an air conditioner, a refrigerator, even all the light bulbs. Or some adapted ones. And it's not a fact that they will be of the quality / color / size you need, etc. Every company that is now inventing a smart home makes its own way of transmitting information that does not always interact with each other. The industry needs a standard, and marketing will be very important here. For example, when videotapes had just appeared, there were several manufacturers on the market with different standards: each cassette could be played only on devices of the same company. Then VHS opened cassette rental shops across the country. Naturally, to use them, you had to have a VHS player. People bought these turntables, the company's market share grew, and gradually it became the industry standard (although the competitor is said to have better quality). The same is necessary for the Internet of Things. When there is at least some standard, it will be possible to talk about the full development of the market. In addition, this will increase the number of manufacturers, which means lower prices, and the technology will be available to more users. Now it is more of a toy for people with above-average income. By the way, Apple has every chance of creating this standard: millions of people already use their systems, it is reliable, simple and convenient, they already have a TV, and they also have enough money and an amazing marketing department (oh, sorry they don't read mine. tips on TheQ)
IoT technologies are spreading at a very high speed. IDC, one of the world's largest analytics companies, estimates that the IoT market in 2014 was $ 655 billion and will triple by 2020. For comparison, the same agency calculated that in 2014 all business expenses on IT in the world amounted to approximately $ 2 trillion.