Monopoly solution
by Kegler

As indicated by the unclued phrase, CORNERING THE MARKET, each corner square contains a (near) synonym for “market”: 1=MALL, 2=SHOP, 3=STORE, 4=MART.

Monopoly solution grid

Across
1MA(L + LARD)S (SAM rev)
6ARC + H(B)IS + HOP
11LOVE MATCH (MOVE LATCH with 1st letters switched)
12ANTIKNOCK (CAN'T OK INK anag)
14B(E)ING
16C(ONTO)UR
18CORNERING
20EYED ("I'D" hom)
22FOILS (2 defs)
23LAN(GUAm)GE
24hOTTER
25ANTS (STAN anag)
27S(W)IR + L
28EASE (hidden)
29THE MARKET
33ERR (last letters)
35T + ROUSSEAU
38RIOt
39EAS(Y + DOES + I)T
42EM[PLOY/c]EE
43P(L)ANS
44S(TORE)YED (DEY'S rev)
45SPARS (2 defs)
46FO(UMA)RT
Down
1MA(LLEAB)LE (LABEL anag)
2ANNE + X
3RE(TI)CENT (IT rev)
4DO(I)N
5SO(NIN + LA)W
6AVOCET (COVET A anag)
7RE + C + ORDER
8HA(L)T
9dICE
10SHOw + PHARS (SHARP anag)
13COG + IT + ATE
15GROUSE (2 defs)
17UN + LESS
19NOTE (rev)
21YANK (2 defs)
22F + O(L)KS
23LAZE (ZEAL anag)
26SHIELD (IS HELD anag)
29T + ROPE
30MaRS
31RUDnER
32OUTSMART (TUTOR SAM anag)
34RIM + Y
35TA(O)S (SAT rev)
36S + ELF
37AINU (hidden)
38REST + ORE
40YEA (hidden)
41OPS (2 defs)