Need honest feedback on non-launched idea

(Not promoting) I'm creating a startup where users can use desktop apps/softwares on cloud for free with a little ads supported. They could run major and traditional softwares and completely secure.

Meanwhile I was first making it a whole CloudOS but it was very costly to host an os for every user. So I made it software only so users can achieve their core needs.

Also I heard i should ask about my startup idea from hacker news. Thats why I came here. Not came to spam here