BT business vs BT home

[chris8210]

I have a BT business and I’m being offered 300MBs on full fibre but on BT home 900mb is available... two questions

why is BT home better speeds?

what does business offer that home doesn’t in relation to internet traffic 

[licquorice]

I could be wrong but I suspect the business product is an uncontended (or at least a low contention ratio) service whereas the residential is contended.