Even with the skill sets, i am not sure the costs are lower in most cases, depending on where you are your uplink costs can be substantial, you might have a asymmetric link or your ToS with the ISP may forbid any hosting services or just poor internet speeds. Without a leased line ISPs are not going to give a uptime SLA or a ring topology for redundancy etc, Reliability is expensive, there are enough cheap k8s/VPS providers at sub $50 month (For ex Digital Ocean).