Of course, LOT is in need of a cash injection - or takeover (best would be by Lufthansa)...
That said, why would LOT go bust just because EK added DXB-WAW to their network? The only long-haul LOT route that
could be impacted would be WAW-PEK, where some PAX may decide to fly to Beijing
via Dubai (although the trip is much longer). Can't see US or Canada-bound passengers prefering to go there
via Dubai than direct from WAW... The rest of LOT's network is short-haul within Europe - not really something where EK can compete.
Cheers