People expect their router to act as a firewall too, via NAT. If you take this away and force people to buy an additional piece of hardware to restore the expected functionality, they won't switch. Simple as that.

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tsimionescu a day ago | parent [-]

All modern NAT routers include a firewall. They don't "act as a firewall too, via NAT", they have both NAT and firewall functionality, even for IPv4. It has been like this for a long time now.

	▲	throw0101c 17 hours ago \| parent \| next [-]
		> All modern NAT routers include a firewall. AFAICT the ER7212PC is not a "NAT router" but just a "router". Even some switches have ACL functionality for the IP layer, but they're sold as switches and not as firewalls.
	▲	shrx a day ago \| parent \| prev [-]
		Sure, but people still use NAT as a way to secure their internal network, so it's effectively acting as a firewall.