If you just want a bike to get to work, you can get one secondhand for not much at all. The world is full of barely used bikes, that will last for ages.
They might need a bit of work, admittedly - but imagine how much economic activity would be generated and how much waste would nbc eliminated if, instead of buying £3k of bike made abroad off Mike Ashley, people spent £100 to £ 250 to get a decent secondhand bike and then took it to their LBS to service it.
My 'nice' bike has just gone in to winter hibernation - it was £150 off
eBay. Albeit I've spent another £200-ish on tyres, tubes, cassette, chain and the stuff to change it from 3x8 to 3 x 10 - but I could have done it cheaper by keeping it 3 x 8 and even so, for £350 I've got a very nice bike.
The one I'm using now is a Hoy hybrid which cost me less than £70. Again, chain, cassette, tyres and new pads and it's good to go for not much over £100.