Let me suppose that you do not exactly know the price of 1 sever maintenance provided by Symantec, CyberArk or CheckPoint. The VPN or Cloudflare's Access solutions you are talking about, are designed for other purposes. Teleport is working in another way at all. I understand that you are supporting FOSS and it's very good! I do not exclude the possibility to become a FOSS product one day. The most important thing is that you don't need to install any additional software on the client machine or server!