Why do the swiss rifle have removable box magazine?

I know the 1889 Schmidt Rubin has a 12 shot magazine... The vetterli was a 12 shot rifle, so it makes sense to me to that the 1889 would have a 12 round box magazine, especially if your previous rifle also had 12 shots... But in a tube... The 12 shot magazine was definitely a great choice for its era.

But why do the 1896, 96/11, 1911&k11, K31 all have box magazines? No doubt it would have been cheaper and easier for them to produce a internal mauser style magazine system... So why didn't they just do that?

I get that the charger clips are 6 rounds, so it would make sense to have a 6 round magazine... but to me it doesn't make sense to have a removable box magazine in the rifles that came after the 1889 Schmidt Rubin... They could've definitely designed a 6 round internal magazine for the k31... Plenty of room inside.

To me a removable box magazine is just another thing to lose or damage... Especially in the era when 1 magazine was issued per rifle and you were supposed to take care of it... There are certainly a bunch of unnumbered k31 magazines around for those reasons... My K31 made in 1940 has a magazine made in 1951... So at one point something must've gone wrong with the original, or it was lost. Also another thing to potentially fall from the rifle In the heat of combat, although that's unlikely.

The 1911 series and k31 magazines aren't interchangeable... So that's obvious to me that they definitely wanted a removable box magazine for a reason.

Any ideas?

The Lee Enfield suffers from the same removable box affliction. I have not questioned it, though.