You pay for the service, not the hardware
newer, cheaper hardware often enables the provider to offer a better service to you, which encourages them to upgrade.
HaaS changes the relationship between the vendor and customer.
HaaS also has advantages for IoT companies, just as software vendors benefited from SaaS. HaaS is easier to sell because of the lowered up-front cost. HaaS contracts generate predictable monthly revenue. HaaS plans create longer customer relationships, which can drive further sales. Bundling hardware, software, maintenance and installation improves margins: Pricing becomes a function of the value provided, not of the underlying (and diminishing) hardware costs. In other words, HaaS can be a shield against the endless march of hardware commoditization.