It’s surprising how many albums are made in home studios these days. Most of David Byrne’s stuff, Jagged Little Pill...
I love this tech, really, and the fact that it brings people closer to making music.
On the more budget end most audio interfaces these days will have a Hi-Z input for guitar, there are many great amp/stompbox emulation plugins these days.
There are also various plugins that emulate a single kind of amp, but they're not quite as convincing, or as popular.
The Kemper was designed by the same dude who designed the Access Virus, which is more than two decades old now and still considered a classic pseudo-analog synth implemented with DSP.