High-Rise Rescues

In the aftermath of the horrendous Grenfell Tower disaster in London last year, I would like to know why rescuing trapped individuals appears to be beyond our present capabilities. Why can't we construct ladders that will reach people trapped in tall buildings? Why can't all towers have nets that can be deployed around their bases to catch those willing to jump, especially if combined with occupants being provided with inflatable suits to cushion their fall? Why can't helicopters be deployed to rescue those in windows or balconies? Why aren't all occupants of high-rise apartments given the chance to escape by sliding down wires or slides? Why are such suggestions considered outlandish?