Do you think this can happen to other software wallets ? Especially Electrum ?
For other wallets, I don't dare to say that something like what happened to Samourai Wallet would not happen if the main party from another wallet did the same thing as Samourai Wallet did.
But I dare say what happened to Samourai Wallet will not happen to Electrum Wallet.
Aside from Charles-Tim's explanation about how Electrum won't end up like Sampurai, they (Electrum) don't get paid and don't make money.
There is a topic that I will leave here to read.
https://bitcointalk.org/index.php?topic=5465806.msg62801387#msg62801387